From 1342dd3299ab5fc8aa4995b58632a8d992ae77bb Mon Sep 17 00:00:00 2001
From: Oliver Hader <oliver@typo3.org>
Date: Thu, 18 Nov 2021 10:19:06 +0100
Subject: [PATCH] [TASK] Set TYPO3 version to 12.0.0-dev

Resolves: #96022
Releases: master
Change-Id: I6d9be94a4013d1380f75ef6f6f8f7f330d15f9f5
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/72224
Tested-by: core-ci <typo3@b13.com>
Tested-by: Oliver Hader <oliver.hader@typo3.org>
Reviewed-by: Oliver Hader <oliver.hader@typo3.org>
---
 composer.json                                 |  4 +-
 composer.lock                                 | 33 ++++++------
 typo3/sysext/adminpanel/composer.json         | 10 ++--
 typo3/sysext/adminpanel/ext_emconf.php        |  4 +-
 .../conf_overriding/a/ext_emconf.php          |  4 +-
 .../conf_overriding/b/ext_emconf.php          |  6 +--
 typo3/sysext/backend/composer.json            |  6 +--
 typo3/sysext/backend/ext_emconf.php           |  6 +--
 typo3/sysext/belog/composer.json              |  4 +-
 typo3/sysext/belog/ext_emconf.php             |  4 +-
 typo3/sysext/beuser/composer.json             |  4 +-
 typo3/sysext/beuser/ext_emconf.php            |  4 +-
 .../core/Classes/Information/Typo3Version.php |  4 +-
 .../Documentation/Changelog/master/Index.rst  | 51 +++++++++++++++++++
 typo3/sysext/core/Documentation/Index.rst     |  1 +
 .../Extensions/aliases_test/ext_emconf.php    |  4 +-
 .../Fixtures/Extensions/test/ext_emconf.php   |  4 +-
 .../test_expressionbuilder/ext_emconf.php     |  4 +-
 .../Extensions/irre_tutorial/ext_emconf.php   |  6 +--
 .../test_datahandler/ext_emconf.php           |  6 +--
 .../Extensions/test_eid/ext_emconf.php        |  4 +-
 .../test_fluid_email/ext_emconf.php           |  4 +-
 .../Extensions/test_irre_csv/ext_emconf.php   |  6 +--
 .../test_localization/ext_emconf.php          |  4 +-
 .../Extensions/test_meta/ext_emconf.php       |  6 +--
 .../Extensions/test_resources/ext_emconf.php  |  4 +-
 .../test_select_flex_mm/ext_emconf.php        |  6 +--
 .../Unit/Utility/Fixtures/ext_emconf.php      |  2 +-
 typo3/sysext/core/composer.json               |  2 +-
 typo3/sysext/core/ext_emconf.php              |  2 +-
 typo3/sysext/dashboard/composer.json          | 12 ++---
 typo3/sysext/dashboard/ext_emconf.php         |  4 +-
 .../Extensions/blog_example/ext_emconf.php    |  4 +-
 .../class_overriding/a/ext_emconf.php         |  4 +-
 .../class_overriding/b/ext_emconf.php         |  4 +-
 .../ext_emconf.php                            |  4 +-
 .../action_controller_test/ext_emconf.php     |  4 +-
 typo3/sysext/extbase/composer.json            |  4 +-
 typo3/sysext/extbase/ext_emconf.php           |  4 +-
 typo3/sysext/extensionmanager/composer.json   |  4 +-
 typo3/sysext/extensionmanager/ext_emconf.php  |  4 +-
 typo3/sysext/felogin/composer.json            |  4 +-
 typo3/sysext/felogin/ext_emconf.php           |  4 +-
 typo3/sysext/filelist/composer.json           |  4 +-
 typo3/sysext/filelist/ext_emconf.php          |  4 +-
 typo3/sysext/filemetadata/composer.json       |  4 +-
 typo3/sysext/filemetadata/ext_emconf.php      |  4 +-
 .../Extensions/fluid_test/composer.json       |  2 +-
 .../Extensions/fluid_test/ext_emconf.php      |  4 +-
 typo3/sysext/fluid/composer.json              |  6 +--
 typo3/sysext/fluid/ext_emconf.php             |  6 +--
 .../sysext/fluid_styled_content/composer.json |  8 +--
 .../fluid_styled_content/ext_emconf.php       |  8 +--
 typo3/sysext/form/composer.json               |  4 +-
 typo3/sysext/form/ext_emconf.php              |  8 +--
 typo3/sysext/frontend/composer.json           |  4 +-
 typo3/sysext/frontend/ext_emconf.php          |  4 +-
 .../template_extension/ext_emconf.php         |  4 +-
 typo3/sysext/impexp/composer.json             |  4 +-
 typo3/sysext/impexp/ext_emconf.php            |  4 +-
 typo3/sysext/indexed_search/composer.json     |  4 +-
 typo3/sysext/indexed_search/ext_emconf.php    |  4 +-
 typo3/sysext/info/composer.json               |  4 +-
 typo3/sysext/info/ext_emconf.php              |  4 +-
 typo3/sysext/install/composer.json            |  8 +--
 typo3/sysext/install/ext_emconf.php           |  8 +--
 typo3/sysext/linkvalidator/composer.json      |  6 +--
 typo3/sysext/linkvalidator/ext_emconf.php     |  6 +--
 typo3/sysext/lowlevel/composer.json           |  4 +-
 typo3/sysext/lowlevel/ext_emconf.php          |  4 +-
 typo3/sysext/opendocs/composer.json           |  4 +-
 typo3/sysext/opendocs/ext_emconf.php          |  4 +-
 typo3/sysext/recordlist/composer.json         |  4 +-
 typo3/sysext/recordlist/ext_emconf.php        |  4 +-
 typo3/sysext/recycler/composer.json           |  4 +-
 typo3/sysext/recycler/ext_emconf.php          |  4 +-
 typo3/sysext/redirects/composer.json          |  6 +--
 typo3/sysext/redirects/ext_emconf.php         |  4 +-
 typo3/sysext/reports/composer.json            |  4 +-
 typo3/sysext/reports/ext_emconf.php           |  4 +-
 typo3/sysext/rte_ckeditor/composer.json       |  4 +-
 typo3/sysext/rte_ckeditor/ext_emconf.php      |  6 +--
 typo3/sysext/scheduler/composer.json          |  4 +-
 typo3/sysext/scheduler/ext_emconf.php         |  4 +-
 typo3/sysext/seo/composer.json                |  8 +--
 typo3/sysext/seo/ext_emconf.php               |  4 +-
 typo3/sysext/setup/composer.json              |  4 +-
 typo3/sysext/setup/ext_emconf.php             |  4 +-
 typo3/sysext/sys_note/composer.json           |  4 +-
 typo3/sysext/sys_note/ext_emconf.php          |  4 +-
 typo3/sysext/t3editor/composer.json           |  4 +-
 typo3/sysext/t3editor/ext_emconf.php          |  4 +-
 typo3/sysext/tstemplate/composer.json         |  4 +-
 typo3/sysext/tstemplate/ext_emconf.php        |  4 +-
 typo3/sysext/viewpage/composer.json           |  4 +-
 typo3/sysext/viewpage/ext_emconf.php          |  4 +-
 typo3/sysext/workspaces/composer.json         |  4 +-
 typo3/sysext/workspaces/ext_emconf.php        |  4 +-
 98 files changed, 289 insertions(+), 234 deletions(-)
 create mode 100644 typo3/sysext/core/Documentation/Changelog/master/Index.rst

diff --git a/composer.json b/composer.json
index 7c1ddcf93cd8..73d1b92bdaa5 100644
--- a/composer.json
+++ b/composer.json
@@ -112,7 +112,7 @@
 		"phpstan/phpstan": "^0.12.99",
 		"phpunit/phpunit": "^9.5.10",
 		"typo3/cms-styleguide": "~11.5.0",
-		"typo3/testing-framework": "^6.14.0"
+		"typo3/testing-framework": "dev-master"
 	},
 	"suggest": {
 		"ext-gd": "GDlib/Freetype is required for building images with text (GIFBUILDER) and can also be used to scale images",
@@ -132,7 +132,7 @@
 			"always-add-alias-loader": true
 		},
 		"branch-alias": {
-			"dev-master": "11.5.x-dev"
+			"dev-master": "12.0.x-dev"
 		}
 	},
 	"scripts": {
diff --git a/composer.lock b/composer.lock
index b94a8f019fdb..0629ba1c8e21 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "03f028291848fc7ee526b81b8cf3c910",
+    "content-hash": "b9d2606e7021783aff0571c136dc0887",
     "packages": [
         {
             "name": "bacon/bacon-qr-code",
@@ -8210,16 +8210,16 @@
         },
         {
             "name": "typo3/testing-framework",
-            "version": "6.14.0",
+            "version": "dev-master",
             "source": {
                 "type": "git",
                 "url": "https://github.com/TYPO3/testing-framework.git",
-                "reference": "a7c449cb08cf8483f548b064ede7ac9c28e2a563"
+                "reference": "f2f7b23a7b070e07ab0ff5ad3358a8ab1ca7db7f"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/TYPO3/testing-framework/zipball/a7c449cb08cf8483f548b064ede7ac9c28e2a563",
-                "reference": "a7c449cb08cf8483f548b064ede7ac9c28e2a563",
+                "url": "https://api.github.com/repos/TYPO3/testing-framework/zipball/f2f7b23a7b070e07ab0ff5ad3358a8ab1ca7db7f",
+                "reference": "f2f7b23a7b070e07ab0ff5ad3358a8ab1ca7db7f",
                 "shasum": ""
             },
             "require": {
@@ -8228,18 +8228,19 @@
                 "php": ">= 7.2",
                 "phpunit/phpunit": "^8.4 || ^9.0",
                 "psr/container": "^1.0",
-                "typo3/cms-backend": "10.*.*@dev || 11.*.*@dev",
-                "typo3/cms-core": "10.*.*@dev || 11.*.*@dev",
-                "typo3/cms-extbase": "10.*.*@dev || 11.*.*@dev",
-                "typo3/cms-fluid": "10.*.*@dev || 11.*.*@dev",
-                "typo3/cms-frontend": "10.*.*@dev || 11.*.*@dev",
-                "typo3/cms-install": "10.*.*@dev || 11.*.*@dev",
-                "typo3/cms-recordlist": "10.*.*@dev || 11.*.*@dev",
+                "typo3/cms-backend": "12.*.*@dev",
+                "typo3/cms-core": "12.*.*@dev",
+                "typo3/cms-extbase": "12.*.*@dev",
+                "typo3/cms-fluid": "12.*.*@dev",
+                "typo3/cms-frontend": "12.*.*@dev",
+                "typo3/cms-install": "12.*.*@dev",
+                "typo3/cms-recordlist": "12.*.*@dev",
                 "typo3fluid/fluid": "^2.5|^3"
             },
             "conflict": {
                 "doctrine/dbal": "2.13.0 || 2.13.1"
             },
+            "default-branch": true,
             "type": "library",
             "autoload": {
                 "psr-4": {
@@ -8272,14 +8273,16 @@
             "support": {
                 "general": "https://typo3.org/support/",
                 "issues": "https://github.com/TYPO3/testing-framework/issues",
-                "source": "https://github.com/TYPO3/testing-framework/tree/6.14.0"
+                "source": "https://github.com/TYPO3/testing-framework/tree/master"
             },
-            "time": "2021-11-15T19:26:13+00:00"
+            "time": "2021-11-18T09:46:38+00:00"
         }
     ],
     "aliases": [],
     "minimum-stability": "stable",
-    "stability-flags": [],
+    "stability-flags": {
+        "typo3/testing-framework": 20
+    },
     "prefer-stable": false,
     "prefer-lowest": false,
     "platform": {
diff --git a/typo3/sysext/adminpanel/composer.json b/typo3/sysext/adminpanel/composer.json
index cdc8683b9b14..68982116e980 100644
--- a/typo3/sysext/adminpanel/composer.json
+++ b/typo3/sysext/adminpanel/composer.json
@@ -23,10 +23,10 @@
 		"psr/http-server-handler": "^1.0",
 		"psr/http-server-middleware": "^1.0",
 		"symfony/var-dumper": "^5.3.7",
-		"typo3/cms-backend": "11.5.*@dev",
-		"typo3/cms-core": "11.5.*@dev",
-		"typo3/cms-fluid": "11.5.*@dev",
-		"typo3/cms-frontend": "11.5.*@dev",
+		"typo3/cms-backend": "12.0.*@dev",
+		"typo3/cms-core": "12.0.*@dev",
+		"typo3/cms-fluid": "12.0.*@dev",
+		"typo3/cms-frontend": "12.0.*@dev",
 		"typo3fluid/fluid": "^2.7.1"
 	},
 	"conflict": {
@@ -34,7 +34,7 @@
 	},
 	"extra": {
 		"branch-alias": {
-			"dev-master": "11.5.x-dev"
+			"dev-master": "12.0.x-dev"
 		},
 		"typo3/cms": {
 			"Package": {
diff --git a/typo3/sysext/adminpanel/ext_emconf.php b/typo3/sysext/adminpanel/ext_emconf.php
index 4b8a2ee93ac4..93543750eea1 100644
--- a/typo3/sysext/adminpanel/ext_emconf.php
+++ b/typo3/sysext/adminpanel/ext_emconf.php
@@ -9,10 +9,10 @@ $EM_CONF[$_EXTKEY] = [
     'author' => 'TYPO3 Core Team',
     'author_email' => 'typo3cms@typo3.org',
     'author_company' => '',
-    'version' => '11.5.4',
+    'version' => '12.0.0',
     'constraints' => [
         'depends' => [
-            'typo3' => '11.5.4',
+            'typo3' => '12.0.0',
         ],
         'conflicts' => [],
         'suggests' => [],
diff --git a/typo3/sysext/backend/Tests/Functional/Configuration/SiteConfiguration/Fixtures/Extensions/conf_overriding/a/ext_emconf.php b/typo3/sysext/backend/Tests/Functional/Configuration/SiteConfiguration/Fixtures/Extensions/conf_overriding/a/ext_emconf.php
index 5128242d378d..8a45b073c5aa 100644
--- a/typo3/sysext/backend/Tests/Functional/Configuration/SiteConfiguration/Fixtures/Extensions/conf_overriding/a/ext_emconf.php
+++ b/typo3/sysext/backend/Tests/Functional/Configuration/SiteConfiguration/Fixtures/Extensions/conf_overriding/a/ext_emconf.php
@@ -12,10 +12,10 @@ $EM_CONF[$_EXTKEY] = [
     'state' => 'stable',
     'uploadfolder' => 0,
     'clearCacheOnLoad' => 1,
-    'version' => '11.5.4',
+    'version' => '12.0.0',
     'constraints' => [
         'depends' => [
-            'typo3' => '11.5.4',
+            'typo3' => '12.0.0',
         ],
         'conflicts' => [],
         'suggests' => [],
diff --git a/typo3/sysext/backend/Tests/Functional/Configuration/SiteConfiguration/Fixtures/Extensions/conf_overriding/b/ext_emconf.php b/typo3/sysext/backend/Tests/Functional/Configuration/SiteConfiguration/Fixtures/Extensions/conf_overriding/b/ext_emconf.php
index 0be5b6c2cd65..2ce6979dff59 100644
--- a/typo3/sysext/backend/Tests/Functional/Configuration/SiteConfiguration/Fixtures/Extensions/conf_overriding/b/ext_emconf.php
+++ b/typo3/sysext/backend/Tests/Functional/Configuration/SiteConfiguration/Fixtures/Extensions/conf_overriding/b/ext_emconf.php
@@ -12,11 +12,11 @@ $EM_CONF[$_EXTKEY] = [
     'state' => 'stable',
     'uploadfolder' => 0,
     'clearCacheOnLoad' => 1,
-    'version' => '11.5.4',
+    'version' => '12.0.0',
     'constraints' => [
         'depends' => [
-            'typo3' => '11.5.4',
-            'a' => '11.5.4',
+            'typo3' => '12.0.0',
+            'a' => '12.0.0',
         ],
         'conflicts' => [],
         'suggests' => [],
diff --git a/typo3/sysext/backend/composer.json b/typo3/sysext/backend/composer.json
index 3a3060453243..cabb8297d4f4 100644
--- a/typo3/sysext/backend/composer.json
+++ b/typo3/sysext/backend/composer.json
@@ -20,8 +20,8 @@
 	},
 	"require": {
 		"psr/event-dispatcher": "^1.0",
-		"typo3/cms-core": "11.5.*@dev",
-		"typo3/cms-recordlist": "11.5.*@dev"
+		"typo3/cms-core": "12.0.*@dev",
+		"typo3/cms-recordlist": "12.0.*@dev"
 	},
 	"suggest": {
 		"typo3/cms-install": "To generate url to install tool in environment toolbar"
@@ -39,7 +39,7 @@
 	},
 	"extra": {
 		"branch-alias": {
-			"dev-master": "11.5.x-dev"
+			"dev-master": "12.0.x-dev"
 		},
 		"typo3/cms": {
 			"Package": {
diff --git a/typo3/sysext/backend/ext_emconf.php b/typo3/sysext/backend/ext_emconf.php
index 6fac6171ed82..25e9178d6c8a 100644
--- a/typo3/sysext/backend/ext_emconf.php
+++ b/typo3/sysext/backend/ext_emconf.php
@@ -9,11 +9,11 @@ $EM_CONF[$_EXTKEY] = [
     'author' => 'TYPO3 Core Team',
     'author_email' => 'typo3cms@typo3.org',
     'author_company' => '',
-    'version' => '11.5.4',
+    'version' => '12.0.0',
     'constraints' => [
         'depends' => [
-            'typo3' => '11.5.4',
-            'recordlist' => '11.5.4',
+            'typo3' => '12.0.0',
+            'recordlist' => '12.0.0',
         ],
         'conflicts' => [],
         'suggests' => [],
diff --git a/typo3/sysext/belog/composer.json b/typo3/sysext/belog/composer.json
index 08c89258c771..767169628848 100644
--- a/typo3/sysext/belog/composer.json
+++ b/typo3/sysext/belog/composer.json
@@ -19,14 +19,14 @@
 		"sort-packages": true
 	},
 	"require": {
-		"typo3/cms-core": "11.5.*@dev"
+		"typo3/cms-core": "12.0.*@dev"
 	},
 	"conflict": {
 		"typo3/cms": "*"
 	},
 	"extra": {
 		"branch-alias": {
-			"dev-master": "11.5.x-dev"
+			"dev-master": "12.0.x-dev"
 		},
 		"typo3/cms": {
 			"Package": {
diff --git a/typo3/sysext/belog/ext_emconf.php b/typo3/sysext/belog/ext_emconf.php
index 06ba21950ffb..1d13f576f34f 100644
--- a/typo3/sysext/belog/ext_emconf.php
+++ b/typo3/sysext/belog/ext_emconf.php
@@ -9,10 +9,10 @@ $EM_CONF[$_EXTKEY] = [
     'author' => 'TYPO3 Core Team',
     'author_email' => 'typo3cms@typo3.org',
     'author_company' => '',
-    'version' => '11.5.4',
+    'version' => '12.0.0',
     'constraints' => [
         'depends' => [
-            'typo3' => '11.5.4',
+            'typo3' => '12.0.0',
         ],
         'conflicts' => [],
         'suggests' => [],
diff --git a/typo3/sysext/beuser/composer.json b/typo3/sysext/beuser/composer.json
index 01f8b169ae30..f928b334e77f 100644
--- a/typo3/sysext/beuser/composer.json
+++ b/typo3/sysext/beuser/composer.json
@@ -19,14 +19,14 @@
 		"sort-packages": true
 	},
 	"require": {
-		"typo3/cms-core": "11.5.*@dev"
+		"typo3/cms-core": "12.0.*@dev"
 	},
 	"conflict": {
 		"typo3/cms": "*"
 	},
 	"extra": {
 		"branch-alias": {
-			"dev-master": "11.5.x-dev"
+			"dev-master": "12.0.x-dev"
 		},
 		"typo3/cms": {
 			"Package": {
diff --git a/typo3/sysext/beuser/ext_emconf.php b/typo3/sysext/beuser/ext_emconf.php
index 4b44a3f5191e..55c29efbd5a8 100644
--- a/typo3/sysext/beuser/ext_emconf.php
+++ b/typo3/sysext/beuser/ext_emconf.php
@@ -9,10 +9,10 @@ $EM_CONF[$_EXTKEY] = [
     'author_company' => '',
     'state' => 'stable',
     'clearCacheOnLoad' => 0,
-    'version' => '11.5.4',
+    'version' => '12.0.0',
     'constraints' => [
         'depends' => [
-            'typo3' => '11.5.4',
+            'typo3' => '12.0.0',
         ],
         'conflicts' => [],
         'suggests' => [],
diff --git a/typo3/sysext/core/Classes/Information/Typo3Version.php b/typo3/sysext/core/Classes/Information/Typo3Version.php
index 5b5ae236b1d7..c850653ff8c0 100644
--- a/typo3/sysext/core/Classes/Information/Typo3Version.php
+++ b/typo3/sysext/core/Classes/Information/Typo3Version.php
@@ -19,8 +19,8 @@ namespace TYPO3\CMS\Core\Information;
 
 class Typo3Version
 {
-    protected const VERSION = '11.5.4-dev';
-    protected const BRANCH = '11.5';
+    protected const VERSION = '12.0.0-dev';
+    protected const BRANCH = '12.0';
 
     /**
      * Define constants used up until TYPO3 v10, this constructor can be removed in TYPO3 v12.
diff --git a/typo3/sysext/core/Documentation/Changelog/master/Index.rst b/typo3/sysext/core/Documentation/Changelog/master/Index.rst
new file mode 100644
index 000000000000..0f979dde6a58
--- /dev/null
+++ b/typo3/sysext/core/Documentation/Changelog/master/Index.rst
@@ -0,0 +1,51 @@
+.. include:: ../../Includes.txt
+
+master Changes
+==============
+
+**Table of contents**
+
+.. contents::
+   :local:
+   :depth: 1
+
+
+Breaking Changes
+^^^^^^^^^^^^^^^^
+
+.. toctree::
+   :maxdepth: 1
+   :titlesonly:
+   :glob:
+
+   Breaking-*
+
+Features
+^^^^^^^^
+
+.. toctree::
+   :maxdepth: 1
+   :titlesonly:
+   :glob:
+
+   Feature-*
+
+Deprecation
+^^^^^^^^^^^
+
+.. toctree::
+   :maxdepth: 1
+   :titlesonly:
+   :glob:
+
+   Deprecation-*
+
+Important
+^^^^^^^^^
+
+.. toctree::
+   :maxdepth: 1
+   :titlesonly:
+   :glob:
+
+   Important-*
diff --git a/typo3/sysext/core/Documentation/Index.rst b/typo3/sysext/core/Documentation/Index.rst
index 54164a18595c..9976e75f7a37 100644
--- a/typo3/sysext/core/Documentation/Index.rst
+++ b/typo3/sysext/core/Documentation/Index.rst
@@ -13,6 +13,7 @@ Every change to the TYPO3 Core which might affect your site is documented here.
    :titlesonly:
 
    Sitemap/Index
+   Master
    Changelog-11
    Changelog-10
    Changelog-9
diff --git a/typo3/sysext/core/Tests/Functional/Cache/Core/Fixtures/Extensions/aliases_test/ext_emconf.php b/typo3/sysext/core/Tests/Functional/Cache/Core/Fixtures/Extensions/aliases_test/ext_emconf.php
index 5128242d378d..8a45b073c5aa 100644
--- a/typo3/sysext/core/Tests/Functional/Cache/Core/Fixtures/Extensions/aliases_test/ext_emconf.php
+++ b/typo3/sysext/core/Tests/Functional/Cache/Core/Fixtures/Extensions/aliases_test/ext_emconf.php
@@ -12,10 +12,10 @@ $EM_CONF[$_EXTKEY] = [
     'state' => 'stable',
     'uploadfolder' => 0,
     'clearCacheOnLoad' => 1,
-    'version' => '11.5.4',
+    'version' => '12.0.0',
     'constraints' => [
         'depends' => [
-            'typo3' => '11.5.4',
+            'typo3' => '12.0.0',
         ],
         'conflicts' => [],
         'suggests' => [],
diff --git a/typo3/sysext/core/Tests/Functional/Category/Collection/Fixtures/Extensions/test/ext_emconf.php b/typo3/sysext/core/Tests/Functional/Category/Collection/Fixtures/Extensions/test/ext_emconf.php
index d0dd12affdc6..ea3b2650e7f2 100644
--- a/typo3/sysext/core/Tests/Functional/Category/Collection/Fixtures/Extensions/test/ext_emconf.php
+++ b/typo3/sysext/core/Tests/Functional/Category/Collection/Fixtures/Extensions/test/ext_emconf.php
@@ -6,7 +6,7 @@ $EM_CONF[$_EXTKEY] = [
     'title' => 'test extension',
     'description' => '',
     'category' => '',
-    'version' => '11.5.4',
+    'version' => '12.0.0',
     'state' => 'beta',
     'clearCacheOnLoad' => 0,
     'author' => 'Christian Kuhn',
@@ -14,7 +14,7 @@ $EM_CONF[$_EXTKEY] = [
     'author_company' => '',
     'constraints' => [
         'depends' => [
-            'typo3' => '11.5.4',
+            'typo3' => '12.0.0',
         ],
         'conflicts' => [],
         'suggests' => [],
diff --git a/typo3/sysext/core/Tests/Functional/Database/Fixtures/Extensions/test_expressionbuilder/ext_emconf.php b/typo3/sysext/core/Tests/Functional/Database/Fixtures/Extensions/test_expressionbuilder/ext_emconf.php
index c54e8f3697c5..f8110041bb78 100644
--- a/typo3/sysext/core/Tests/Functional/Database/Fixtures/Extensions/test_expressionbuilder/ext_emconf.php
+++ b/typo3/sysext/core/Tests/Functional/Database/Fixtures/Extensions/test_expressionbuilder/ext_emconf.php
@@ -6,14 +6,14 @@ $EM_CONF[$_EXTKEY] = [
     'title' => 'ExpressionBuilder Test',
     'description' => 'ExpressionBuilder Test',
     'category' => 'example',
-    'version' => '11.5.4',
+    'version' => '12.0.0',
     'state' => 'beta',
     'clearCacheOnLoad' => 0,
     'author' => 'Christian Kuhn',
     'author_email' => 'lolli@schwarzbu.ch',
     'constraints' => [
         'depends' => [
-            'typo3' => '11.5.4',
+            'typo3' => '12.0.0',
         ],
         'conflicts' => [],
         'suggests' => [],
diff --git a/typo3/sysext/core/Tests/Functional/Fixtures/Extensions/irre_tutorial/ext_emconf.php b/typo3/sysext/core/Tests/Functional/Fixtures/Extensions/irre_tutorial/ext_emconf.php
index 2009d5836c91..d520effee6dc 100644
--- a/typo3/sysext/core/Tests/Functional/Fixtures/Extensions/irre_tutorial/ext_emconf.php
+++ b/typo3/sysext/core/Tests/Functional/Fixtures/Extensions/irre_tutorial/ext_emconf.php
@@ -6,7 +6,7 @@ $EM_CONF[$_EXTKEY] = [
     'title' => 'Fixture extension for functional tests for Inline Relational Record Editing IRRE',
     'description' => 'based on irre_tutorial extension created by Oliver Hader, see https://forge.typo3.org/projects/extension-irre_tutorial',
     'category' => 'example',
-    'version' => '11.5.4',
+    'version' => '12.0.0',
     'state' => 'beta',
     'clearCacheOnLoad' => 0,
     'author' => 'Oliver Hader',
@@ -14,8 +14,8 @@ $EM_CONF[$_EXTKEY] = [
     'author_company' => '',
     'constraints' => [
         'depends' => [
-            'typo3' => '11.5.4',
-            'workspaces' => '11.5.4',
+            'typo3' => '12.0.0',
+            'workspaces' => '12.0.0',
         ],
         'conflicts' => [],
         'suggests' => [],
diff --git a/typo3/sysext/core/Tests/Functional/Fixtures/Extensions/test_datahandler/ext_emconf.php b/typo3/sysext/core/Tests/Functional/Fixtures/Extensions/test_datahandler/ext_emconf.php
index de0b1bf98174..edb9f5e8a39d 100644
--- a/typo3/sysext/core/Tests/Functional/Fixtures/Extensions/test_datahandler/ext_emconf.php
+++ b/typo3/sysext/core/Tests/Functional/Fixtures/Extensions/test_datahandler/ext_emconf.php
@@ -6,7 +6,7 @@ $EM_CONF[$_EXTKEY] = [
     'title' => 'DataHandler Test',
     'description' => 'DataHandler Test',
     'category' => 'example',
-    'version' => '11.5.4',
+    'version' => '12.0.0',
     'state' => 'beta',
     'clearCacheOnLoad' => 0,
     'author' => 'Oliver Hader',
@@ -14,8 +14,8 @@ $EM_CONF[$_EXTKEY] = [
     'author_company' => '',
     'constraints' => [
         'depends' => [
-            'typo3' => '11.5.4',
-            'workspaces' => '11.5.4',
+            'typo3' => '12.0.0',
+            'workspaces' => '12.0.0',
         ],
         'conflicts' => [],
         'suggests' => [],
diff --git a/typo3/sysext/core/Tests/Functional/Fixtures/Extensions/test_eid/ext_emconf.php b/typo3/sysext/core/Tests/Functional/Fixtures/Extensions/test_eid/ext_emconf.php
index 6d480dfb4542..dfe86b69ed58 100644
--- a/typo3/sysext/core/Tests/Functional/Fixtures/Extensions/test_eid/ext_emconf.php
+++ b/typo3/sysext/core/Tests/Functional/Fixtures/Extensions/test_eid/ext_emconf.php
@@ -6,7 +6,7 @@ $EM_CONF[$_EXTKEY] = [
     'title' => 'Frontend eid responder',
     'description' => 'Frontend eid responder',
     'category' => 'example',
-    'version' => '11.5.4',
+    'version' => '12.0.0',
     'state' => 'beta',
     'clearCacheOnLoad' => 0,
     'author' => 'Stefan Bürk',
@@ -14,7 +14,7 @@ $EM_CONF[$_EXTKEY] = [
     'author_company' => '',
     'constraints' => [
         'depends' => [
-            'typo3' => '11.5.4',
+            'typo3' => '12.0.0',
         ],
         'conflicts' => [],
         'suggests' => [],
diff --git a/typo3/sysext/core/Tests/Functional/Fixtures/Extensions/test_fluid_email/ext_emconf.php b/typo3/sysext/core/Tests/Functional/Fixtures/Extensions/test_fluid_email/ext_emconf.php
index 4ff2f81a6c9d..1ff9623cca8f 100644
--- a/typo3/sysext/core/Tests/Functional/Fixtures/Extensions/test_fluid_email/ext_emconf.php
+++ b/typo3/sysext/core/Tests/Functional/Fixtures/Extensions/test_fluid_email/ext_emconf.php
@@ -6,7 +6,7 @@ $EM_CONF[$_EXTKEY] = [
     'title' => 'Testing FluidEmail',
     'description' => 'Testing FluidEmail',
     'category' => 'example',
-    'version' => '11.5.4',
+    'version' => '12.0.0',
     'state' => 'beta',
     'clearCacheOnLoad' => 0,
     'author' => 'Oliver Bartsch',
@@ -14,7 +14,7 @@ $EM_CONF[$_EXTKEY] = [
     'author_company' => '',
     'constraints' => [
         'depends' => [
-            'typo3' => '11.5.4',
+            'typo3' => '12.0.0',
         ],
         'conflicts' => [],
         'suggests' => [],
diff --git a/typo3/sysext/core/Tests/Functional/Fixtures/Extensions/test_irre_csv/ext_emconf.php b/typo3/sysext/core/Tests/Functional/Fixtures/Extensions/test_irre_csv/ext_emconf.php
index 97a535e87a59..a16ab096e730 100644
--- a/typo3/sysext/core/Tests/Functional/Fixtures/Extensions/test_irre_csv/ext_emconf.php
+++ b/typo3/sysext/core/Tests/Functional/Fixtures/Extensions/test_irre_csv/ext_emconf.php
@@ -6,7 +6,7 @@ $EM_CONF[$_EXTKEY] = [
     'title' => 'DataHandler Testing test_irre_csv',
     'description' => 'DataHandler Testing test_irre_csv',
     'category' => 'example',
-    'version' => '11.5.4',
+    'version' => '12.0.0',
     'state' => 'beta',
     'clearCacheOnLoad' => 0,
     'author' => 'Anja Leichsenring',
@@ -14,8 +14,8 @@ $EM_CONF[$_EXTKEY] = [
     'author_company' => '',
     'constraints' => [
         'depends' => [
-            'typo3' => '11.5.4',
-            'workspaces' => '11.5.4',
+            'typo3' => '12.0.0',
+            'workspaces' => '12.0.0',
         ],
         'conflicts' => [],
         'suggests' => [],
diff --git a/typo3/sysext/core/Tests/Functional/Fixtures/Extensions/test_localization/ext_emconf.php b/typo3/sysext/core/Tests/Functional/Fixtures/Extensions/test_localization/ext_emconf.php
index a983c23a6864..1acbd9340196 100644
--- a/typo3/sysext/core/Tests/Functional/Fixtures/Extensions/test_localization/ext_emconf.php
+++ b/typo3/sysext/core/Tests/Functional/Fixtures/Extensions/test_localization/ext_emconf.php
@@ -6,7 +6,7 @@ $EM_CONF[$_EXTKEY] = [
     'title' => 'Localization Testing',
     'description' => 'Localization Testing',
     'category' => 'example',
-    'version' => '11.5.4',
+    'version' => '12.0.0',
     'state' => 'beta',
     'clearCacheOnLoad' => 0,
     'author' => 'Simon Gilli',
@@ -14,7 +14,7 @@ $EM_CONF[$_EXTKEY] = [
     'author_company' => '',
     'constraints' => [
         'depends' => [
-            'typo3' => '11.5.4',
+            'typo3' => '12.0.0',
         ],
         'conflicts' => [],
         'suggests' => [],
diff --git a/typo3/sysext/core/Tests/Functional/Fixtures/Extensions/test_meta/ext_emconf.php b/typo3/sysext/core/Tests/Functional/Fixtures/Extensions/test_meta/ext_emconf.php
index eb5c769d24c9..985a5c69fa7e 100644
--- a/typo3/sysext/core/Tests/Functional/Fixtures/Extensions/test_meta/ext_emconf.php
+++ b/typo3/sysext/core/Tests/Functional/Fixtures/Extensions/test_meta/ext_emconf.php
@@ -6,7 +6,7 @@ $EM_CONF[$_EXTKEY] = [
     'title' => 'MetaData Test',
     'description' => 'MetaData Test',
     'category' => 'example',
-    'version' => '11.5.4',
+    'version' => '12.0.0',
     'state' => 'beta',
     'clearCacheOnLoad' => 0,
     'author' => 'Frank Nägler',
@@ -14,8 +14,8 @@ $EM_CONF[$_EXTKEY] = [
     'author_company' => '',
     'constraints' => [
         'depends' => [
-            'typo3' => '11.5.4',
-            'seo' => '11.5.4',
+            'typo3' => '12.0.0',
+            'seo' => '12.0.0',
         ],
         'conflicts' => [],
         'suggests' => [],
diff --git a/typo3/sysext/core/Tests/Functional/Fixtures/Extensions/test_resources/ext_emconf.php b/typo3/sysext/core/Tests/Functional/Fixtures/Extensions/test_resources/ext_emconf.php
index 9851f0e5d730..8edba7732e09 100644
--- a/typo3/sysext/core/Tests/Functional/Fixtures/Extensions/test_resources/ext_emconf.php
+++ b/typo3/sysext/core/Tests/Functional/Fixtures/Extensions/test_resources/ext_emconf.php
@@ -6,7 +6,7 @@ $EM_CONF[$_EXTKEY] = [
     'title' => 'Test Resources',
     'description' => 'Test Resources',
     'category' => 'example',
-    'version' => '11.5.4',
+    'version' => '12.0.0',
     'state' => 'beta',
     'clearCacheOnLoad' => 0,
     'author' => 'Oliver Hader',
@@ -14,7 +14,7 @@ $EM_CONF[$_EXTKEY] = [
     'author_company' => '',
     'constraints' => [
         'depends' => [
-            'typo3' => '11.5.4',
+            'typo3' => '12.0.0',
         ],
         'conflicts' => [],
         'suggests' => [],
diff --git a/typo3/sysext/core/Tests/Functional/Fixtures/Extensions/test_select_flex_mm/ext_emconf.php b/typo3/sysext/core/Tests/Functional/Fixtures/Extensions/test_select_flex_mm/ext_emconf.php
index d3328e89291c..0ea8263a1869 100644
--- a/typo3/sysext/core/Tests/Functional/Fixtures/Extensions/test_select_flex_mm/ext_emconf.php
+++ b/typo3/sysext/core/Tests/Functional/Fixtures/Extensions/test_select_flex_mm/ext_emconf.php
@@ -6,7 +6,7 @@ $EM_CONF[$_EXTKEY] = [
     'title' => 'DataHandler Testing test_select_flex_mm',
     'description' => 'DataHandler Testing test_select_flex_mm',
     'category' => 'example',
-    'version' => '11.5.4',
+    'version' => '12.0.0',
     'state' => 'beta',
     'clearCacheOnLoad' => 0,
     'author' => 'Christian Kuhn',
@@ -14,8 +14,8 @@ $EM_CONF[$_EXTKEY] = [
     'author_company' => '',
     'constraints' => [
         'depends' => [
-            'typo3' => '11.5.4',
-            'workspaces' => '11.5.4',
+            'typo3' => '12.0.0',
+            'workspaces' => '12.0.0',
         ],
         'conflicts' => [],
         'suggests' => [],
diff --git a/typo3/sysext/core/Tests/Unit/Utility/Fixtures/ext_emconf.php b/typo3/sysext/core/Tests/Unit/Utility/Fixtures/ext_emconf.php
index 2760cab4f30d..016cdd35a074 100644
--- a/typo3/sysext/core/Tests/Unit/Utility/Fixtures/ext_emconf.php
+++ b/typo3/sysext/core/Tests/Unit/Utility/Fixtures/ext_emconf.php
@@ -11,7 +11,7 @@ $EM_CONF[$_EXTKEY] = [
     'author' => '',
     'author_email' => '',
     'author_company' => '',
-    'version' => '11.5.4',
+    'version' => '12.0.0',
     'constraints' => [
         'depends' => [],
         'conflicts' => [],
diff --git a/typo3/sysext/core/composer.json b/typo3/sysext/core/composer.json
index 9f803ca23e6d..46a976faa6c0 100644
--- a/typo3/sysext/core/composer.json
+++ b/typo3/sysext/core/composer.json
@@ -102,7 +102,7 @@
 	},
 	"extra": {
 		"branch-alias": {
-			"dev-master": "11.5.x-dev"
+			"dev-master": "12.0.x-dev"
 		},
 		"typo3/cms": {
 			"Package": {
diff --git a/typo3/sysext/core/ext_emconf.php b/typo3/sysext/core/ext_emconf.php
index 27ca0e43ab5d..6381ab09f6e2 100644
--- a/typo3/sysext/core/ext_emconf.php
+++ b/typo3/sysext/core/ext_emconf.php
@@ -9,7 +9,7 @@ $EM_CONF[$_EXTKEY] = [
     'author' => 'TYPO3 Core Team',
     'author_email' => 'typo3cms@typo3.org',
     'author_company' => '',
-    'version' => '11.5.4',
+    'version' => '12.0.0',
     'constraints' => [
         'depends' => [],
         'conflicts' => [],
diff --git a/typo3/sysext/dashboard/composer.json b/typo3/sysext/dashboard/composer.json
index 67c6c336934e..9027ce74be85 100644
--- a/typo3/sysext/dashboard/composer.json
+++ b/typo3/sysext/dashboard/composer.json
@@ -19,18 +19,18 @@
 		"sort-packages": true
 	},
 	"require": {
-		"typo3/cms-core": "11.5.*@dev",
-		"typo3/cms-frontend": "11.5.*@dev",
-		"typo3/cms-backend": "11.5.*@dev",
-		"typo3/cms-fluid": "11.5.*@dev",
-		"typo3/cms-extbase": "11.5.*@dev"
+		"typo3/cms-core": "12.0.*@dev",
+		"typo3/cms-frontend": "12.0.*@dev",
+		"typo3/cms-backend": "12.0.*@dev",
+		"typo3/cms-fluid": "12.0.*@dev",
+		"typo3/cms-extbase": "12.0.*@dev"
 	},
 	"conflict": {
 		"typo3/cms": "*"
 	},
 	"extra": {
 		"branch-alias": {
-			"dev-master": "11.5.x-dev"
+			"dev-master": "12.0.x-dev"
 		},
 		"typo3/cms": {
 			"extension-key": "dashboard",
diff --git a/typo3/sysext/dashboard/ext_emconf.php b/typo3/sysext/dashboard/ext_emconf.php
index 5ce1ae6c2ffb..55e72d6e270f 100644
--- a/typo3/sysext/dashboard/ext_emconf.php
+++ b/typo3/sysext/dashboard/ext_emconf.php
@@ -9,10 +9,10 @@ $EM_CONF[$_EXTKEY] = [
     'author_company' => '',
     'state' => 'stable',
     'clearCacheOnLoad' => 0,
-    'version' => '11.5.4',
+    'version' => '12.0.0',
     'constraints' => [
         'depends' => [
-            'typo3' => '11.5.4',
+            'typo3' => '12.0.0',
         ],
         'conflicts' => [],
         'suggests' => [],
diff --git a/typo3/sysext/extbase/Tests/Functional/Fixtures/Extensions/blog_example/ext_emconf.php b/typo3/sysext/extbase/Tests/Functional/Fixtures/Extensions/blog_example/ext_emconf.php
index f250753db7d9..fceee03ef328 100644
--- a/typo3/sysext/extbase/Tests/Functional/Fixtures/Extensions/blog_example/ext_emconf.php
+++ b/typo3/sysext/extbase/Tests/Functional/Fixtures/Extensions/blog_example/ext_emconf.php
@@ -11,10 +11,10 @@ $EM_CONF[$_EXTKEY] = [
     'author_email' => '',
     'state' => 'stable',
     'clearCacheOnLoad' => 1,
-    'version' => '11.5.4',
+    'version' => '12.0.0',
     'constraints' => [
         'depends' => [
-            'typo3' => '11.5.4',
+            'typo3' => '12.0.0',
         ],
         'conflicts' => [],
         'suggests' => [],
diff --git a/typo3/sysext/extbase/Tests/Functional/Fixtures/Extensions/class_overriding/a/ext_emconf.php b/typo3/sysext/extbase/Tests/Functional/Fixtures/Extensions/class_overriding/a/ext_emconf.php
index 5128242d378d..8a45b073c5aa 100644
--- a/typo3/sysext/extbase/Tests/Functional/Fixtures/Extensions/class_overriding/a/ext_emconf.php
+++ b/typo3/sysext/extbase/Tests/Functional/Fixtures/Extensions/class_overriding/a/ext_emconf.php
@@ -12,10 +12,10 @@ $EM_CONF[$_EXTKEY] = [
     'state' => 'stable',
     'uploadfolder' => 0,
     'clearCacheOnLoad' => 1,
-    'version' => '11.5.4',
+    'version' => '12.0.0',
     'constraints' => [
         'depends' => [
-            'typo3' => '11.5.4',
+            'typo3' => '12.0.0',
         ],
         'conflicts' => [],
         'suggests' => [],
diff --git a/typo3/sysext/extbase/Tests/Functional/Fixtures/Extensions/class_overriding/b/ext_emconf.php b/typo3/sysext/extbase/Tests/Functional/Fixtures/Extensions/class_overriding/b/ext_emconf.php
index 5128242d378d..8a45b073c5aa 100644
--- a/typo3/sysext/extbase/Tests/Functional/Fixtures/Extensions/class_overriding/b/ext_emconf.php
+++ b/typo3/sysext/extbase/Tests/Functional/Fixtures/Extensions/class_overriding/b/ext_emconf.php
@@ -12,10 +12,10 @@ $EM_CONF[$_EXTKEY] = [
     'state' => 'stable',
     'uploadfolder' => 0,
     'clearCacheOnLoad' => 1,
-    'version' => '11.5.4',
+    'version' => '12.0.0',
     'constraints' => [
         'depends' => [
-            'typo3' => '11.5.4',
+            'typo3' => '12.0.0',
         ],
         'conflicts' => [],
         'suggests' => [],
diff --git a/typo3/sysext/extbase/Tests/Functional/Mvc/Controller/Fixture/Extension/action_controller_argument_test/ext_emconf.php b/typo3/sysext/extbase/Tests/Functional/Mvc/Controller/Fixture/Extension/action_controller_argument_test/ext_emconf.php
index 5128242d378d..8a45b073c5aa 100644
--- a/typo3/sysext/extbase/Tests/Functional/Mvc/Controller/Fixture/Extension/action_controller_argument_test/ext_emconf.php
+++ b/typo3/sysext/extbase/Tests/Functional/Mvc/Controller/Fixture/Extension/action_controller_argument_test/ext_emconf.php
@@ -12,10 +12,10 @@ $EM_CONF[$_EXTKEY] = [
     'state' => 'stable',
     'uploadfolder' => 0,
     'clearCacheOnLoad' => 1,
-    'version' => '11.5.4',
+    'version' => '12.0.0',
     'constraints' => [
         'depends' => [
-            'typo3' => '11.5.4',
+            'typo3' => '12.0.0',
         ],
         'conflicts' => [],
         'suggests' => [],
diff --git a/typo3/sysext/extbase/Tests/Functional/Mvc/Controller/Fixture/Extension/action_controller_test/ext_emconf.php b/typo3/sysext/extbase/Tests/Functional/Mvc/Controller/Fixture/Extension/action_controller_test/ext_emconf.php
index 5128242d378d..8a45b073c5aa 100644
--- a/typo3/sysext/extbase/Tests/Functional/Mvc/Controller/Fixture/Extension/action_controller_test/ext_emconf.php
+++ b/typo3/sysext/extbase/Tests/Functional/Mvc/Controller/Fixture/Extension/action_controller_test/ext_emconf.php
@@ -12,10 +12,10 @@ $EM_CONF[$_EXTKEY] = [
     'state' => 'stable',
     'uploadfolder' => 0,
     'clearCacheOnLoad' => 1,
-    'version' => '11.5.4',
+    'version' => '12.0.0',
     'constraints' => [
         'depends' => [
-            'typo3' => '11.5.4',
+            'typo3' => '12.0.0',
         ],
         'conflicts' => [],
         'suggests' => [],
diff --git a/typo3/sysext/extbase/composer.json b/typo3/sysext/extbase/composer.json
index 58fd29cff5cd..4c181c2e511a 100644
--- a/typo3/sysext/extbase/composer.json
+++ b/typo3/sysext/extbase/composer.json
@@ -24,7 +24,7 @@
 		"symfony/dependency-injection": "^5.3.7",
 		"symfony/property-access": "^5.3.7",
 		"symfony/property-info": "^5.3.7",
-		"typo3/cms-core": "11.5.*@dev"
+		"typo3/cms-core": "12.0.*@dev"
 	},
 	"suggest": {
 		"typo3/cms-scheduler": "Additional scheduler tasks"
@@ -34,7 +34,7 @@
 	},
 	"extra": {
 		"branch-alias": {
-			"dev-master": "11.5.x-dev"
+			"dev-master": "12.0.x-dev"
 		},
 		"typo3/cms": {
 			"Package": {
diff --git a/typo3/sysext/extbase/ext_emconf.php b/typo3/sysext/extbase/ext_emconf.php
index 8fc40b85b732..774f918ea0aa 100644
--- a/typo3/sysext/extbase/ext_emconf.php
+++ b/typo3/sysext/extbase/ext_emconf.php
@@ -9,10 +9,10 @@ $EM_CONF[$_EXTKEY] = [
     'author_company' => '',
     'state' => 'stable',
     'clearCacheOnLoad' => 1,
-    'version' => '11.5.4',
+    'version' => '12.0.0',
     'constraints' => [
         'depends' => [
-            'typo3' => '11.5.4',
+            'typo3' => '12.0.0',
         ],
         'conflicts' => [],
         'suggests' => [
diff --git a/typo3/sysext/extensionmanager/composer.json b/typo3/sysext/extensionmanager/composer.json
index da05ca1c6dec..c4e77913d334 100644
--- a/typo3/sysext/extensionmanager/composer.json
+++ b/typo3/sysext/extensionmanager/composer.json
@@ -20,14 +20,14 @@
 	},
 	"require": {
 		"ext-libxml": "*",
-		"typo3/cms-core": "11.5.*@dev"
+		"typo3/cms-core": "12.0.*@dev"
 	},
 	"conflict": {
 		"typo3/cms": "*"
 	},
 	"extra": {
 		"branch-alias": {
-			"dev-master": "11.5.x-dev"
+			"dev-master": "12.0.x-dev"
 		},
 		"typo3/cms": {
 			"Package": {
diff --git a/typo3/sysext/extensionmanager/ext_emconf.php b/typo3/sysext/extensionmanager/ext_emconf.php
index 3e19c1b7563a..393eedfa021c 100644
--- a/typo3/sysext/extensionmanager/ext_emconf.php
+++ b/typo3/sysext/extensionmanager/ext_emconf.php
@@ -9,10 +9,10 @@ $EM_CONF[$_EXTKEY] = [
     'author' => 'TYPO3 Core Team',
     'author_email' => 'typo3cms@typo3.org',
     'author_company' => '',
-    'version' => '11.5.4',
+    'version' => '12.0.0',
     'constraints' => [
         'depends' => [
-            'typo3' => '11.5.4',
+            'typo3' => '12.0.0',
         ],
         'conflicts' => [],
         'suggests' => [],
diff --git a/typo3/sysext/felogin/composer.json b/typo3/sysext/felogin/composer.json
index d861d05f5b32..6e14431dcea1 100644
--- a/typo3/sysext/felogin/composer.json
+++ b/typo3/sysext/felogin/composer.json
@@ -19,14 +19,14 @@
 		"sort-packages": true
 	},
 	"require": {
-		"typo3/cms-core": "11.5.*@dev"
+		"typo3/cms-core": "12.0.*@dev"
 	},
 	"conflict": {
 		"typo3/cms": "*"
 	},
 	"extra": {
 		"branch-alias": {
-			"dev-master": "11.5.x-dev"
+			"dev-master": "12.0.x-dev"
 		},
 		"typo3/cms": {
 			"Package": {
diff --git a/typo3/sysext/felogin/ext_emconf.php b/typo3/sysext/felogin/ext_emconf.php
index 1a5b4f55da01..f6fc392203d3 100644
--- a/typo3/sysext/felogin/ext_emconf.php
+++ b/typo3/sysext/felogin/ext_emconf.php
@@ -9,10 +9,10 @@ $EM_CONF[$_EXTKEY] = [
     'author_company' => '',
     'state' => 'stable',
     'clearCacheOnLoad' => 1,
-    'version' => '11.5.4',
+    'version' => '12.0.0',
     'constraints' => [
         'depends' => [
-            'typo3' => '11.5.4',
+            'typo3' => '12.0.0',
         ],
         'conflicts' => [],
         'suggests' => [],
diff --git a/typo3/sysext/filelist/composer.json b/typo3/sysext/filelist/composer.json
index e0086ec27def..2fe893b25026 100644
--- a/typo3/sysext/filelist/composer.json
+++ b/typo3/sysext/filelist/composer.json
@@ -19,14 +19,14 @@
 		"sort-packages": true
 	},
 	"require": {
-		"typo3/cms-core": "11.5.*@dev"
+		"typo3/cms-core": "12.0.*@dev"
 	},
 	"conflict": {
 		"typo3/cms": "*"
 	},
 	"extra": {
 		"branch-alias": {
-			"dev-master": "11.5.x-dev"
+			"dev-master": "12.0.x-dev"
 		},
 		"typo3/cms": {
 			"Package": {
diff --git a/typo3/sysext/filelist/ext_emconf.php b/typo3/sysext/filelist/ext_emconf.php
index d340bd14a0c5..1fd8434ebb79 100644
--- a/typo3/sysext/filelist/ext_emconf.php
+++ b/typo3/sysext/filelist/ext_emconf.php
@@ -9,10 +9,10 @@ $EM_CONF[$_EXTKEY] = [
     'author' => 'TYPO3 Core Team',
     'author_email' => 'typo3cms@typo3.org',
     'author_company' => '',
-    'version' => '11.5.4',
+    'version' => '12.0.0',
     'constraints' => [
         'depends' => [
-            'typo3' => '11.5.4',
+            'typo3' => '12.0.0',
         ],
         'conflicts' => [],
         'suggests' => [],
diff --git a/typo3/sysext/filemetadata/composer.json b/typo3/sysext/filemetadata/composer.json
index 152efebb53c6..cc0f7138ec0f 100644
--- a/typo3/sysext/filemetadata/composer.json
+++ b/typo3/sysext/filemetadata/composer.json
@@ -19,14 +19,14 @@
 		"sort-packages": true
 	},
 	"require": {
-		"typo3/cms-core": "11.5.*@dev"
+		"typo3/cms-core": "12.0.*@dev"
 	},
 	"conflict": {
 		"typo3/cms": "*"
 	},
 	"extra": {
 		"branch-alias": {
-			"dev-master": "11.5.x-dev"
+			"dev-master": "12.0.x-dev"
 		},
 		"typo3/cms": {
 			"extension-key": "filemetadata"
diff --git a/typo3/sysext/filemetadata/ext_emconf.php b/typo3/sysext/filemetadata/ext_emconf.php
index 41d027a3d311..f2e540883622 100644
--- a/typo3/sysext/filemetadata/ext_emconf.php
+++ b/typo3/sysext/filemetadata/ext_emconf.php
@@ -8,10 +8,10 @@ $EM_CONF[$_EXTKEY] = [
     'author_email' => 'typo3cms@typo3.org',
     'state' => 'stable',
     'clearCacheOnLoad' => 0,
-    'version' => '11.5.4',
+    'version' => '12.0.0',
     'constraints' => [
         'depends' => [
-            'typo3' => '11.5.4',
+            'typo3' => '12.0.0',
         ],
         'conflicts' => [],
         'suggests' => [],
diff --git a/typo3/sysext/fluid/Tests/Functional/Fixtures/Extensions/fluid_test/composer.json b/typo3/sysext/fluid/Tests/Functional/Fixtures/Extensions/fluid_test/composer.json
index fed2cd497a27..cc66330371b0 100644
--- a/typo3/sysext/fluid/Tests/Functional/Fixtures/Extensions/fluid_test/composer.json
+++ b/typo3/sysext/fluid/Tests/Functional/Fixtures/Extensions/fluid_test/composer.json
@@ -28,7 +28,7 @@
     },
     "extra": {
         "branch-alias": {
-            "dev-master": "11.5.x-dev"
+            "dev-master": "12.0.x-dev"
         },
         "typo3/cms": {
             "cms-package-dir": "{$vendor-dir}/typo3/cms",
diff --git a/typo3/sysext/fluid/Tests/Functional/Fixtures/Extensions/fluid_test/ext_emconf.php b/typo3/sysext/fluid/Tests/Functional/Fixtures/Extensions/fluid_test/ext_emconf.php
index 586e8a75ba04..8eb6aa2f5fd4 100644
--- a/typo3/sysext/fluid/Tests/Functional/Fixtures/Extensions/fluid_test/ext_emconf.php
+++ b/typo3/sysext/fluid/Tests/Functional/Fixtures/Extensions/fluid_test/ext_emconf.php
@@ -11,10 +11,10 @@ $EM_CONF[$_EXTKEY] = [
     'author_company' => 'helhum.io',
     'state' => 'stable',
     'clearCacheOnLoad' => 0,
-    'version' => '11.5.4',
+    'version' => '12.0.0',
     'constraints' => [
         'depends' => [
-            'typo3' => '11.5.4',
+            'typo3' => '12.0.0',
         ],
         'conflicts' => [],
         'suggests' => [],
diff --git a/typo3/sysext/fluid/composer.json b/typo3/sysext/fluid/composer.json
index 0085d1c42603..2d0b2fe286a1 100644
--- a/typo3/sysext/fluid/composer.json
+++ b/typo3/sysext/fluid/composer.json
@@ -20,8 +20,8 @@
 	},
 	"require": {
 		"symfony/dependency-injection": "^5.3.7",
-		"typo3/cms-core": "11.5.*@dev",
-		"typo3/cms-extbase": "11.5.*@dev",
+		"typo3/cms-core": "12.0.*@dev",
+		"typo3/cms-extbase": "12.0.*@dev",
 		"typo3fluid/fluid": "^2.7.1"
 	},
 	"conflict": {
@@ -29,7 +29,7 @@
 	},
 	"extra": {
 		"branch-alias": {
-			"dev-master": "11.5.x-dev"
+			"dev-master": "12.0.x-dev"
 		},
 		"typo3/cms": {
 			"Package": {
diff --git a/typo3/sysext/fluid/ext_emconf.php b/typo3/sysext/fluid/ext_emconf.php
index 7a2d4f6c5687..9f5a3776e322 100644
--- a/typo3/sysext/fluid/ext_emconf.php
+++ b/typo3/sysext/fluid/ext_emconf.php
@@ -9,11 +9,11 @@ $EM_CONF[$_EXTKEY] = [
     'author_company' => '',
     'state' => 'stable',
     'clearCacheOnLoad' => 0,
-    'version' => '11.5.4',
+    'version' => '12.0.0',
     'constraints' => [
         'depends' => [
-            'core' => '11.5.4',
-            'extbase' => '11.5.4',
+            'core' => '12.0.0',
+            'extbase' => '12.0.0',
         ],
         'conflicts' => [],
         'suggests' => [],
diff --git a/typo3/sysext/fluid_styled_content/composer.json b/typo3/sysext/fluid_styled_content/composer.json
index 9941b34fbb6f..a951dcebf678 100644
--- a/typo3/sysext/fluid_styled_content/composer.json
+++ b/typo3/sysext/fluid_styled_content/composer.json
@@ -19,16 +19,16 @@
 		"sort-packages": true
 	},
 	"require": {
-		"typo3/cms-core": "11.5.*@dev",
-		"typo3/cms-fluid": "11.5.*@dev",
-		"typo3/cms-frontend": "11.5.*@dev"
+		"typo3/cms-core": "12.0.*@dev",
+		"typo3/cms-fluid": "12.0.*@dev",
+		"typo3/cms-frontend": "12.0.*@dev"
 	},
 	"conflict": {
 		"typo3/cms": "*"
 	},
 	"extra": {
 		"branch-alias": {
-			"dev-master": "11.5.x-dev"
+			"dev-master": "12.0.x-dev"
 		},
 		"typo3/cms": {
 			"Package": {
diff --git a/typo3/sysext/fluid_styled_content/ext_emconf.php b/typo3/sysext/fluid_styled_content/ext_emconf.php
index 66369f12b29e..dc9b31159ab4 100644
--- a/typo3/sysext/fluid_styled_content/ext_emconf.php
+++ b/typo3/sysext/fluid_styled_content/ext_emconf.php
@@ -7,12 +7,12 @@ $EM_CONF[$_EXTKEY] = [
     'state' => 'stable',
     'author' => 'TYPO3 Core Team',
     'author_email' => 'typo3cms@typo3.org',
-    'version' => '11.5.4',
+    'version' => '12.0.0',
     'constraints' => [
         'depends' => [
-            'typo3' => '11.5.4',
-            'fluid' => '11.5.4',
-            'frontend' => '11.5.4',
+            'typo3' => '12.0.0',
+            'fluid' => '12.0.0',
+            'frontend' => '12.0.0',
         ],
         'conflicts' => [],
         'suggests' => [],
diff --git a/typo3/sysext/form/composer.json b/typo3/sysext/form/composer.json
index 132a13a84d68..251ff11409ad 100644
--- a/typo3/sysext/form/composer.json
+++ b/typo3/sysext/form/composer.json
@@ -21,7 +21,7 @@
 	"require": {
 		"psr/http-message": "^1.0",
 		"symfony/expression-language": "^5.3.7",
-		"typo3/cms-core": "11.5.*@dev"
+		"typo3/cms-core": "12.0.*@dev"
 	},
 	"suggest": {
 		"typo3/cms-filelist": "Listing of files in the directory",
@@ -32,7 +32,7 @@
 	},
 	"extra": {
 		"branch-alias": {
-			"dev-master": "11.5.x-dev"
+			"dev-master": "12.0.x-dev"
 		},
 		"typo3/cms": {
 			"Package": {
diff --git a/typo3/sysext/form/ext_emconf.php b/typo3/sysext/form/ext_emconf.php
index 01ed544d5d4d..0691b45d5b5b 100644
--- a/typo3/sysext/form/ext_emconf.php
+++ b/typo3/sysext/form/ext_emconf.php
@@ -9,15 +9,15 @@ $EM_CONF[$_EXTKEY] = [
     'author' => 'TYPO3 Core Team',
     'author_email' => 'typo3cms@typo3.org',
     'author_company' => '',
-    'version' => '11.5.4',
+    'version' => '12.0.0',
     'constraints' => [
         'depends' => [
-            'typo3' => '11.5.4',
+            'typo3' => '12.0.0',
         ],
         'conflicts' => [],
         'suggests' => [
-            'filelist' => '11.5.4',
-            'impexp' => '11.5.4',
+            'filelist' => '12.0.0',
+            'impexp' => '12.0.0',
         ],
     ],
 ];
diff --git a/typo3/sysext/frontend/composer.json b/typo3/sysext/frontend/composer.json
index fbe64b99aa97..a686b8485938 100644
--- a/typo3/sysext/frontend/composer.json
+++ b/typo3/sysext/frontend/composer.json
@@ -21,7 +21,7 @@
 	"require": {
 		"ext-libxml": "*",
 		"symfony/polyfill-mbstring": "^1.23.1",
-		"typo3/cms-core": "11.5.*@dev"
+		"typo3/cms-core": "12.0.*@dev"
 	},
 	"conflict": {
 		"typo3/cms": "*"
@@ -31,7 +31,7 @@
 	},
 	"extra": {
 		"branch-alias": {
-			"dev-master": "11.5.x-dev"
+			"dev-master": "12.0.x-dev"
 		},
 		"typo3/cms": {
 			"Package": {
diff --git a/typo3/sysext/frontend/ext_emconf.php b/typo3/sysext/frontend/ext_emconf.php
index 667aea06602e..3ac2021b8f2d 100644
--- a/typo3/sysext/frontend/ext_emconf.php
+++ b/typo3/sysext/frontend/ext_emconf.php
@@ -9,10 +9,10 @@ $EM_CONF[$_EXTKEY] = [
     'author' => 'TYPO3 Core Team',
     'author_email' => 'typo3cms@typo3.org',
     'author_company' => '',
-    'version' => '11.5.4',
+    'version' => '12.0.0',
     'constraints' => [
         'depends' => [
-            'typo3' => '11.5.4',
+            'typo3' => '12.0.0',
         ],
         'conflicts' => [],
         'suggests' => [],
diff --git a/typo3/sysext/impexp/Tests/Functional/Fixtures/Extensions/template_extension/ext_emconf.php b/typo3/sysext/impexp/Tests/Functional/Fixtures/Extensions/template_extension/ext_emconf.php
index db379b086c27..e993bc1818cb 100644
--- a/typo3/sysext/impexp/Tests/Functional/Fixtures/Extensions/template_extension/ext_emconf.php
+++ b/typo3/sysext/impexp/Tests/Functional/Fixtures/Extensions/template_extension/ext_emconf.php
@@ -6,7 +6,7 @@ $EM_CONF[$_EXTKEY] = [
     'title' => 'Impexp test extension',
     'description' => '',
     'category' => '',
-    'version' => '11.5.4',
+    'version' => '12.0.0',
     'state' => 'beta',
     'clearCacheOnLoad' => 1,
     'author' => 'Marc Bastian Heinrichs',
@@ -14,7 +14,7 @@ $EM_CONF[$_EXTKEY] = [
     'author_company' => '',
     'constraints' => [
         'depends' => [
-            'typo3' => '11.5.4',
+            'typo3' => '12.0.0',
         ],
         'conflicts' => [],
         'suggests' => [],
diff --git a/typo3/sysext/impexp/composer.json b/typo3/sysext/impexp/composer.json
index 103b0571e4a0..86c2d6b37669 100644
--- a/typo3/sysext/impexp/composer.json
+++ b/typo3/sysext/impexp/composer.json
@@ -19,14 +19,14 @@
 		"sort-packages": true
 	},
 	"require": {
-		"typo3/cms-core": "11.5.*@dev"
+		"typo3/cms-core": "12.0.*@dev"
 	},
 	"conflict": {
 		"typo3/cms": "*"
 	},
 	"extra": {
 		"branch-alias": {
-			"dev-master": "11.5.x-dev"
+			"dev-master": "12.0.x-dev"
 		},
 		"typo3/cms": {
 			"Package": {
diff --git a/typo3/sysext/impexp/ext_emconf.php b/typo3/sysext/impexp/ext_emconf.php
index 07a8b63fa16a..e1444c1de249 100644
--- a/typo3/sysext/impexp/ext_emconf.php
+++ b/typo3/sysext/impexp/ext_emconf.php
@@ -9,10 +9,10 @@ $EM_CONF[$_EXTKEY] = [
     'author' => 'TYPO3 Core Team',
     'author_email' => 'typo3cms@typo3.org',
     'author_company' => '',
-    'version' => '11.5.4',
+    'version' => '12.0.0',
     'constraints' => [
         'depends' => [
-            'typo3' => '11.5.4',
+            'typo3' => '12.0.0',
         ],
         'conflicts' => [],
         'suggests' => [],
diff --git a/typo3/sysext/indexed_search/composer.json b/typo3/sysext/indexed_search/composer.json
index 28e0ebfb317f..ed8d2e164468 100644
--- a/typo3/sysext/indexed_search/composer.json
+++ b/typo3/sysext/indexed_search/composer.json
@@ -19,7 +19,7 @@
 		"sort-packages": true
 	},
 	"require": {
-		"typo3/cms-core": "11.5.*@dev"
+		"typo3/cms-core": "12.0.*@dev"
 	},
 	"conflict": {
 		"typo3/cms": "*"
@@ -29,7 +29,7 @@
 	},
 	"extra": {
 		"branch-alias": {
-			"dev-master": "11.5.x-dev"
+			"dev-master": "12.0.x-dev"
 		},
 		"typo3/cms": {
 			"extension-key": "indexed_search"
diff --git a/typo3/sysext/indexed_search/ext_emconf.php b/typo3/sysext/indexed_search/ext_emconf.php
index 70018a6ee825..a18a45099aa7 100644
--- a/typo3/sysext/indexed_search/ext_emconf.php
+++ b/typo3/sysext/indexed_search/ext_emconf.php
@@ -9,10 +9,10 @@ $EM_CONF[$_EXTKEY] = [
     'author' => 'TYPO3 Core Team',
     'author_email' => 'typo3cms@typo3.org',
     'author_company' => '',
-    'version' => '11.5.4',
+    'version' => '12.0.0',
     'constraints' => [
         'depends' => [
-            'typo3' => '11.5.4',
+            'typo3' => '12.0.0',
         ],
         'conflicts' => [],
         'suggests' => [
diff --git a/typo3/sysext/info/composer.json b/typo3/sysext/info/composer.json
index a13634f3d4df..b2b2f8e11c66 100644
--- a/typo3/sysext/info/composer.json
+++ b/typo3/sysext/info/composer.json
@@ -19,7 +19,7 @@
 		"sort-packages": true
 	},
 	"require": {
-		"typo3/cms-core": "11.5.*@dev"
+		"typo3/cms-core": "12.0.*@dev"
 	},
 	"conflict": {
 		"typo3/cms": "*"
@@ -29,7 +29,7 @@
 	},
 	"extra": {
 		"branch-alias": {
-			"dev-master": "11.5.x-dev"
+			"dev-master": "12.0.x-dev"
 		},
 		"typo3/cms": {
 			"Package": {
diff --git a/typo3/sysext/info/ext_emconf.php b/typo3/sysext/info/ext_emconf.php
index c394d3102c66..ea2a8cf4e802 100644
--- a/typo3/sysext/info/ext_emconf.php
+++ b/typo3/sysext/info/ext_emconf.php
@@ -9,10 +9,10 @@ $EM_CONF[$_EXTKEY] = [
     'author' => 'TYPO3 Core Team',
     'author_email' => 'typo3cms@typo3.org',
     'author_company' => '',
-    'version' => '11.5.4',
+    'version' => '12.0.0',
     'constraints' => [
         'depends' => [
-            'typo3' => '11.5.4',
+            'typo3' => '12.0.0',
         ],
         'conflicts' => [],
         'suggests' => [],
diff --git a/typo3/sysext/install/composer.json b/typo3/sysext/install/composer.json
index 3ff03d3389e7..bc7b9c07b447 100644
--- a/typo3/sysext/install/composer.json
+++ b/typo3/sysext/install/composer.json
@@ -24,16 +24,16 @@
 		"nikic/php-parser": "^4.10.4",
 		"symfony/finder": "^5.3.7",
 		"symfony/http-foundation": "^5.3.7",
-		"typo3/cms-core": "11.5.*@dev",
-		"typo3/cms-extbase": "11.5.*@dev",
-		"typo3/cms-fluid": "11.5.*@dev"
+		"typo3/cms-core": "12.0.*@dev",
+		"typo3/cms-extbase": "12.0.*@dev",
+		"typo3/cms-fluid": "12.0.*@dev"
 	},
 	"conflict": {
 		"typo3/cms": "*"
 	},
 	"extra": {
 		"branch-alias": {
-			"dev-master": "11.5.x-dev"
+			"dev-master": "12.0.x-dev"
 		},
 		"typo3/cms": {
 			"Package": {
diff --git a/typo3/sysext/install/ext_emconf.php b/typo3/sysext/install/ext_emconf.php
index e3d2172f20cf..7510ac0478be 100644
--- a/typo3/sysext/install/ext_emconf.php
+++ b/typo3/sysext/install/ext_emconf.php
@@ -9,12 +9,12 @@ $EM_CONF[$_EXTKEY] = [
     'author' => 'TYPO3 Core Team',
     'author_email' => 'typo3cms@typo3.org',
     'author_company' => '',
-    'version' => '11.5.4',
+    'version' => '12.0.0',
     'constraints' => [
         'depends' => [
-            'typo3' => '11.5.4',
-            'extbase' => '11.5.4',
-            'fluid' => '11.5.4',
+            'typo3' => '12.0.0',
+            'extbase' => '12.0.0',
+            'fluid' => '12.0.0',
         ],
         'conflicts' => [],
         'suggests' => [],
diff --git a/typo3/sysext/linkvalidator/composer.json b/typo3/sysext/linkvalidator/composer.json
index 0b0685e624dc..5090e6930a32 100644
--- a/typo3/sysext/linkvalidator/composer.json
+++ b/typo3/sysext/linkvalidator/composer.json
@@ -19,8 +19,8 @@
 		"sort-packages": true
 	},
 	"require": {
-		"typo3/cms-core": "11.5.*@dev",
-		"typo3/cms-info": "11.5.*@dev"
+		"typo3/cms-core": "12.0.*@dev",
+		"typo3/cms-info": "12.0.*@dev"
 	},
 	"suggest": {
 		"typo3/cms-scheduler": "Regular checks of links"
@@ -30,7 +30,7 @@
 	},
 	"extra": {
 		"branch-alias": {
-			"dev-master": "11.5.x-dev"
+			"dev-master": "12.0.x-dev"
 		},
 		"typo3/cms": {
 			"extension-key": "linkvalidator"
diff --git a/typo3/sysext/linkvalidator/ext_emconf.php b/typo3/sysext/linkvalidator/ext_emconf.php
index 94bffc94dcfa..a981f999a3b9 100644
--- a/typo3/sysext/linkvalidator/ext_emconf.php
+++ b/typo3/sysext/linkvalidator/ext_emconf.php
@@ -9,11 +9,11 @@ $EM_CONF[$_EXTKEY] = [
     'author_company' => '',
     'state' => 'stable',
     'clearCacheOnLoad' => 0,
-    'version' => '11.5.4',
+    'version' => '12.0.0',
     'constraints' => [
         'depends' => [
-            'typo3' => '11.5.4',
-            'info' => '11.5.4',
+            'typo3' => '12.0.0',
+            'info' => '12.0.0',
         ],
         'conflicts' => [],
         'suggests' => [
diff --git a/typo3/sysext/lowlevel/composer.json b/typo3/sysext/lowlevel/composer.json
index 5b4cf6dede3e..d65877bdf35c 100644
--- a/typo3/sysext/lowlevel/composer.json
+++ b/typo3/sysext/lowlevel/composer.json
@@ -19,14 +19,14 @@
 		"sort-packages": true
 	},
 	"require": {
-		"typo3/cms-core": "11.5.*@dev"
+		"typo3/cms-core": "12.0.*@dev"
 	},
 	"conflict": {
 		"typo3/cms": "*"
 	},
 	"extra": {
 		"branch-alias": {
-			"dev-master": "11.5.x-dev"
+			"dev-master": "12.0.x-dev"
 		},
 		"typo3/cms": {
 			"Package": {
diff --git a/typo3/sysext/lowlevel/ext_emconf.php b/typo3/sysext/lowlevel/ext_emconf.php
index e86087a0cfbd..bead43031e0f 100644
--- a/typo3/sysext/lowlevel/ext_emconf.php
+++ b/typo3/sysext/lowlevel/ext_emconf.php
@@ -9,10 +9,10 @@ $EM_CONF[$_EXTKEY] = [
     'author' => 'TYPO3 Core Team',
     'author_email' => 'typo3cms@typo3.org',
     'author_company' => '',
-    'version' => '11.5.4',
+    'version' => '12.0.0',
     'constraints' => [
         'depends' => [
-            'typo3' => '11.5.4',
+            'typo3' => '12.0.0',
         ],
         'conflicts' => [],
         'suggests' => [],
diff --git a/typo3/sysext/opendocs/composer.json b/typo3/sysext/opendocs/composer.json
index fc3b9d0bd6e9..95f517b08e21 100644
--- a/typo3/sysext/opendocs/composer.json
+++ b/typo3/sysext/opendocs/composer.json
@@ -19,14 +19,14 @@
 		"sort-packages": true
 	},
 	"require": {
-		"typo3/cms-core": "11.5.*@dev"
+		"typo3/cms-core": "12.0.*@dev"
 	},
 	"conflict": {
 		"typo3/cms": "*"
 	},
 	"extra": {
 		"branch-alias": {
-			"dev-master": "11.5.x-dev"
+			"dev-master": "12.0.x-dev"
 		},
 		"typo3/cms": {
 			"extension-key": "opendocs"
diff --git a/typo3/sysext/opendocs/ext_emconf.php b/typo3/sysext/opendocs/ext_emconf.php
index 5d9f423f17b8..dbdbb9a9fb05 100644
--- a/typo3/sysext/opendocs/ext_emconf.php
+++ b/typo3/sysext/opendocs/ext_emconf.php
@@ -9,10 +9,10 @@ $EM_CONF[$_EXTKEY] = [
     'author' => 'TYPO3 Core Team',
     'author_email' => 'typo3cms@typo3.org',
     'author_company' => '',
-    'version' => '11.5.4',
+    'version' => '12.0.0',
     'constraints' => [
         'depends' => [
-            'typo3' => '11.5.4',
+            'typo3' => '12.0.0',
         ],
         'conflicts' => [],
         'suggests' => [],
diff --git a/typo3/sysext/recordlist/composer.json b/typo3/sysext/recordlist/composer.json
index 2c0689602c7b..d0a848bb52c4 100644
--- a/typo3/sysext/recordlist/composer.json
+++ b/typo3/sysext/recordlist/composer.json
@@ -19,14 +19,14 @@
 		"sort-packages": true
 	},
 	"require": {
-		"typo3/cms-core": "11.5.*@dev"
+		"typo3/cms-core": "12.0.*@dev"
 	},
 	"conflict": {
 		"typo3/cms": "*"
 	},
 	"extra": {
 		"branch-alias": {
-			"dev-master": "11.5.x-dev"
+			"dev-master": "12.0.x-dev"
 		},
 		"typo3/cms": {
 			"Package": {
diff --git a/typo3/sysext/recordlist/ext_emconf.php b/typo3/sysext/recordlist/ext_emconf.php
index 9bd07f8033fb..39a0344e146b 100644
--- a/typo3/sysext/recordlist/ext_emconf.php
+++ b/typo3/sysext/recordlist/ext_emconf.php
@@ -9,10 +9,10 @@ $EM_CONF[$_EXTKEY] = [
     'author' => 'TYPO3 Core Team',
     'author_email' => 'typo3cms@typo3.org',
     'author_company' => '',
-    'version' => '11.5.4',
+    'version' => '12.0.0',
     'constraints' => [
         'depends' => [
-            'typo3' => '11.5.4',
+            'typo3' => '12.0.0',
         ],
         'conflicts' => [],
         'suggests' => [],
diff --git a/typo3/sysext/recycler/composer.json b/typo3/sysext/recycler/composer.json
index c5c5f46edd5b..bf556ceaf28e 100644
--- a/typo3/sysext/recycler/composer.json
+++ b/typo3/sysext/recycler/composer.json
@@ -19,7 +19,7 @@
 		"sort-packages": true
 	},
 	"require": {
-		"typo3/cms-core": "11.5.*@dev"
+		"typo3/cms-core": "12.0.*@dev"
 	},
 	"suggest": {
 		"typo3/cms-scheduler": "Remove deleted records after given time"
@@ -29,7 +29,7 @@
 	},
 	"extra": {
 		"branch-alias": {
-			"dev-master": "11.5.x-dev"
+			"dev-master": "12.0.x-dev"
 		},
 		"typo3/cms": {
 			"extension-key": "recycler"
diff --git a/typo3/sysext/recycler/ext_emconf.php b/typo3/sysext/recycler/ext_emconf.php
index a717f797e376..c93aacfb1814 100644
--- a/typo3/sysext/recycler/ext_emconf.php
+++ b/typo3/sysext/recycler/ext_emconf.php
@@ -9,10 +9,10 @@ $EM_CONF[$_EXTKEY] = [
     'state' => 'stable',
     'clearCacheOnLoad' => 0,
     'author_company' => '',
-    'version' => '11.5.4',
+    'version' => '12.0.0',
     'constraints' => [
         'depends' => [
-            'typo3' => '11.5.4',
+            'typo3' => '12.0.0',
         ],
         'conflicts' => [],
         'suggests' => [
diff --git a/typo3/sysext/redirects/composer.json b/typo3/sysext/redirects/composer.json
index c86922fd17ec..f6defa26b270 100644
--- a/typo3/sysext/redirects/composer.json
+++ b/typo3/sysext/redirects/composer.json
@@ -23,8 +23,8 @@
 		"psr/http-message": "^1.0",
 		"psr/log": "^1.0",
 		"symfony/console": "^5.3.7",
-		"typo3/cms-backend": "11.5.*@dev",
-		"typo3/cms-core": "11.5.*@dev",
+		"typo3/cms-backend": "12.0.*@dev",
+		"typo3/cms-core": "12.0.*@dev",
 		"typo3fluid/fluid": "^2.7.1"
 	},
 	"conflict": {
@@ -36,7 +36,7 @@
 	},
 	"extra": {
 		"branch-alias": {
-			"dev-master": "11.5.x-dev"
+			"dev-master": "12.0.x-dev"
 		},
 		"typo3/cms": {
 			"extension-key": "redirects",
diff --git a/typo3/sysext/redirects/ext_emconf.php b/typo3/sysext/redirects/ext_emconf.php
index 16f9c7dadc85..acb81c33a8f0 100644
--- a/typo3/sysext/redirects/ext_emconf.php
+++ b/typo3/sysext/redirects/ext_emconf.php
@@ -9,10 +9,10 @@ $EM_CONF[$_EXTKEY] = [
     'author_company' => '',
     'state' => 'stable',
     'clearCacheOnLoad' => 0,
-    'version' => '11.5.4',
+    'version' => '12.0.0',
     'constraints' => [
         'depends' => [
-            'typo3' => '11.5.4',
+            'typo3' => '12.0.0',
         ],
         'conflicts' => [],
         'suggests' => [
diff --git a/typo3/sysext/reports/composer.json b/typo3/sysext/reports/composer.json
index 7ad833e76cb2..3d3de8b1c218 100644
--- a/typo3/sysext/reports/composer.json
+++ b/typo3/sysext/reports/composer.json
@@ -19,7 +19,7 @@
 		"sort-packages": true
 	},
 	"require": {
-		"typo3/cms-core": "11.5.*@dev"
+		"typo3/cms-core": "12.0.*@dev"
 	},
 	"suggest": {
 		"typo3/cms-scheduler": "Determine system's status and send it via email"
@@ -29,7 +29,7 @@
 	},
 	"extra": {
 		"branch-alias": {
-			"dev-master": "11.5.x-dev"
+			"dev-master": "12.0.x-dev"
 		},
 		"typo3/cms": {
 			"Package": {
diff --git a/typo3/sysext/reports/ext_emconf.php b/typo3/sysext/reports/ext_emconf.php
index 661c7db42587..7c18ff894785 100644
--- a/typo3/sysext/reports/ext_emconf.php
+++ b/typo3/sysext/reports/ext_emconf.php
@@ -9,10 +9,10 @@ $EM_CONF[$_EXTKEY] = [
     'author_company' => '',
     'state' => 'stable',
     'clearCacheOnLoad' => 0,
-    'version' => '11.5.4',
+    'version' => '12.0.0',
     'constraints' => [
         'depends' => [
-            'typo3' => '11.5.4',
+            'typo3' => '12.0.0',
         ],
         'conflicts' => [],
         'suggests' => [
diff --git a/typo3/sysext/rte_ckeditor/composer.json b/typo3/sysext/rte_ckeditor/composer.json
index 2e58f28a1cf3..60d9513ea792 100644
--- a/typo3/sysext/rte_ckeditor/composer.json
+++ b/typo3/sysext/rte_ckeditor/composer.json
@@ -19,7 +19,7 @@
 		"sort-packages": true
 	},
 	"require": {
-		"typo3/cms-core": "11.5.*@dev"
+		"typo3/cms-core": "12.0.*@dev"
 	},
 	"conflict": {
 		"typo3/cms": "*"
@@ -29,7 +29,7 @@
 	},
 	"extra": {
 		"branch-alias": {
-			"dev-master": "11.5.x-dev"
+			"dev-master": "12.0.x-dev"
 		},
 		"typo3/cms": {
 			"Package": {
diff --git a/typo3/sysext/rte_ckeditor/ext_emconf.php b/typo3/sysext/rte_ckeditor/ext_emconf.php
index fd622d6df9ad..aead054e9100 100644
--- a/typo3/sysext/rte_ckeditor/ext_emconf.php
+++ b/typo3/sysext/rte_ckeditor/ext_emconf.php
@@ -8,14 +8,14 @@ $EM_CONF[$_EXTKEY] = [
     'clearCacheOnLoad' => 0,
     'author' => 'TYPO3 Core Team',
     'author_email' => 'typo3cms@typo3.org',
-    'version' => '11.5.4',
+    'version' => '12.0.0',
     'constraints' => [
         'depends' => [
-            'typo3' => '11.5.4',
+            'typo3' => '12.0.0',
         ],
         'conflicts' => [],
         'suggests' => [
-            'setup' => '11.5.4',
+            'setup' => '12.0.0',
         ],
     ],
 ];
diff --git a/typo3/sysext/scheduler/composer.json b/typo3/sysext/scheduler/composer.json
index 8e99a3a4cb4c..08ac3ba4271a 100644
--- a/typo3/sysext/scheduler/composer.json
+++ b/typo3/sysext/scheduler/composer.json
@@ -19,14 +19,14 @@
 		"sort-packages": true
 	},
 	"require": {
-		"typo3/cms-core": "11.5.*@dev"
+		"typo3/cms-core": "12.0.*@dev"
 	},
 	"conflict": {
 		"typo3/cms": "*"
 	},
 	"extra": {
 		"branch-alias": {
-			"dev-master": "11.5.x-dev"
+			"dev-master": "12.0.x-dev"
 		},
 		"typo3/cms": {
 			"extension-key": "scheduler"
diff --git a/typo3/sysext/scheduler/ext_emconf.php b/typo3/sysext/scheduler/ext_emconf.php
index 12baf44f6096..e1e36325862b 100644
--- a/typo3/sysext/scheduler/ext_emconf.php
+++ b/typo3/sysext/scheduler/ext_emconf.php
@@ -4,7 +4,7 @@ $EM_CONF[$_EXTKEY] = [
     'title' => 'Scheduler',
     'description' => 'The TYPO3 Scheduler lets you register tasks to happen at a specific time',
     'category' => 'misc',
-    'version' => '11.5.4',
+    'version' => '12.0.0',
     'state' => 'stable',
     'clearCacheOnLoad' => 0,
     'author' => 'TYPO3 Core Team',
@@ -12,7 +12,7 @@ $EM_CONF[$_EXTKEY] = [
     'author_company' => '',
     'constraints' => [
         'depends' => [
-            'typo3' => '11.5.4',
+            'typo3' => '12.0.0',
         ],
         'conflicts' => [],
         'suggests' => [],
diff --git a/typo3/sysext/seo/composer.json b/typo3/sysext/seo/composer.json
index 53784d781f43..74ce3a9ac8c8 100644
--- a/typo3/sysext/seo/composer.json
+++ b/typo3/sysext/seo/composer.json
@@ -19,16 +19,16 @@
 		"sort-packages": true
 	},
 	"require": {
-		"typo3/cms-core": "11.5.*@dev",
-		"typo3/cms-frontend": "11.5.*@dev",
-		"typo3/cms-extbase": "11.5.*@dev"
+		"typo3/cms-core": "12.0.*@dev",
+		"typo3/cms-frontend": "12.0.*@dev",
+		"typo3/cms-extbase": "12.0.*@dev"
 	},
 	"conflict": {
 		"typo3/cms": "*"
 	},
 	"extra": {
 		"branch-alias": {
-			"dev-master": "11.5.x-dev"
+			"dev-master": "12.0.x-dev"
 		},
 		"typo3/cms": {
 			"extension-key": "seo",
diff --git a/typo3/sysext/seo/ext_emconf.php b/typo3/sysext/seo/ext_emconf.php
index 86de1d8b00b2..a158d28e3303 100644
--- a/typo3/sysext/seo/ext_emconf.php
+++ b/typo3/sysext/seo/ext_emconf.php
@@ -9,10 +9,10 @@ $EM_CONF[$_EXTKEY] = [
     'author_company' => '',
     'state' => 'stable',
     'clearCacheOnLoad' => 0,
-    'version' => '11.5.4',
+    'version' => '12.0.0',
     'constraints' => [
         'depends' => [
-            'typo3' => '11.5.4',
+            'typo3' => '12.0.0',
         ],
         'conflicts' => [],
         'suggests' => [],
diff --git a/typo3/sysext/setup/composer.json b/typo3/sysext/setup/composer.json
index 4aca3233f9ce..1c35e904aa54 100644
--- a/typo3/sysext/setup/composer.json
+++ b/typo3/sysext/setup/composer.json
@@ -19,14 +19,14 @@
 		"sort-packages": true
 	},
 	"require": {
-		"typo3/cms-core": "11.5.*@dev"
+		"typo3/cms-core": "12.0.*@dev"
 	},
 	"conflict": {
 		"typo3/cms": "*"
 	},
 	"extra": {
 		"branch-alias": {
-			"dev-master": "11.5.x-dev"
+			"dev-master": "12.0.x-dev"
 		},
 		"typo3/cms": {
 			"Package": {
diff --git a/typo3/sysext/setup/ext_emconf.php b/typo3/sysext/setup/ext_emconf.php
index e1ecaff74948..d805ca18e7fc 100644
--- a/typo3/sysext/setup/ext_emconf.php
+++ b/typo3/sysext/setup/ext_emconf.php
@@ -9,10 +9,10 @@ $EM_CONF[$_EXTKEY] = [
     'author' => 'TYPO3 Core Team',
     'author_email' => 'typo3cms@typo3.org',
     'author_company' => '',
-    'version' => '11.5.4',
+    'version' => '12.0.0',
     'constraints' => [
         'depends' => [
-            'typo3' => '11.5.4',
+            'typo3' => '12.0.0',
         ],
         'conflicts' => [],
         'suggests' => [],
diff --git a/typo3/sysext/sys_note/composer.json b/typo3/sysext/sys_note/composer.json
index 789ffda575d7..e29f930471c0 100644
--- a/typo3/sysext/sys_note/composer.json
+++ b/typo3/sysext/sys_note/composer.json
@@ -19,14 +19,14 @@
 		"sort-packages": true
 	},
 	"require": {
-		"typo3/cms-core": "11.5.*@dev"
+		"typo3/cms-core": "12.0.*@dev"
 	},
 	"conflict": {
 		"typo3/cms": "*"
 	},
 	"extra": {
 		"branch-alias": {
-			"dev-master": "11.5.x-dev"
+			"dev-master": "12.0.x-dev"
 		},
 		"typo3/cms": {
 			"Package": {
diff --git a/typo3/sysext/sys_note/ext_emconf.php b/typo3/sysext/sys_note/ext_emconf.php
index 5068151727d5..9453ac025b5c 100644
--- a/typo3/sysext/sys_note/ext_emconf.php
+++ b/typo3/sysext/sys_note/ext_emconf.php
@@ -9,10 +9,10 @@ $EM_CONF[$_EXTKEY] = [
     'author' => 'TYPO3 Core Team',
     'author_email' => 'typo3cms@typo3.org',
     'author_company' => '',
-    'version' => '11.5.4',
+    'version' => '12.0.0',
     'constraints' => [
         'depends' => [
-            'typo3' => '11.5.4',
+            'typo3' => '12.0.0',
         ],
         'conflicts' => [],
         'suggests' => [],
diff --git a/typo3/sysext/t3editor/composer.json b/typo3/sysext/t3editor/composer.json
index 4f938d08433b..f2c151cd7d3a 100644
--- a/typo3/sysext/t3editor/composer.json
+++ b/typo3/sysext/t3editor/composer.json
@@ -20,14 +20,14 @@
 	},
 	"require": {
 		"ext-libxml": "*",
-		"typo3/cms-core": "11.5.*@dev"
+		"typo3/cms-core": "12.0.*@dev"
 	},
 	"conflict": {
 		"typo3/cms": "*"
 	},
 	"extra": {
 		"branch-alias": {
-			"dev-master": "11.5.x-dev"
+			"dev-master": "12.0.x-dev"
 		},
 		"typo3/cms": {
 			"Package": {
diff --git a/typo3/sysext/t3editor/ext_emconf.php b/typo3/sysext/t3editor/ext_emconf.php
index c6d01cb7c78e..7e5dedd6f7e4 100644
--- a/typo3/sysext/t3editor/ext_emconf.php
+++ b/typo3/sysext/t3editor/ext_emconf.php
@@ -9,10 +9,10 @@ $EM_CONF[$_EXTKEY] = [
     'author' => 'TYPO3 Core Team',
     'author_email' => 'typo3cms@typo3.org',
     'author_company' => '',
-    'version' => '11.5.4',
+    'version' => '12.0.0',
     'constraints' => [
         'depends' => [
-            'typo3' => '11.5.4',
+            'typo3' => '12.0.0',
         ],
         'conflicts' => [],
         'suggests' => [],
diff --git a/typo3/sysext/tstemplate/composer.json b/typo3/sysext/tstemplate/composer.json
index 8d4a41f8134d..8d162c5c165c 100644
--- a/typo3/sysext/tstemplate/composer.json
+++ b/typo3/sysext/tstemplate/composer.json
@@ -19,14 +19,14 @@
 		"sort-packages": true
 	},
 	"require": {
-		"typo3/cms-core": "11.5.*@dev"
+		"typo3/cms-core": "12.0.*@dev"
 	},
 	"conflict": {
 		"typo3/cms": "*"
 	},
 	"extra": {
 		"branch-alias": {
-			"dev-master": "11.5.x-dev"
+			"dev-master": "12.0.x-dev"
 		},
 		"typo3/cms": {
 			"Package": {
diff --git a/typo3/sysext/tstemplate/ext_emconf.php b/typo3/sysext/tstemplate/ext_emconf.php
index 22fe3871b079..a0e7eee04993 100644
--- a/typo3/sysext/tstemplate/ext_emconf.php
+++ b/typo3/sysext/tstemplate/ext_emconf.php
@@ -9,10 +9,10 @@ $EM_CONF[$_EXTKEY] = [
     'author' => 'TYPO3 Core Team',
     'author_email' => 'typo3cms@typo3.org',
     'author_company' => '',
-    'version' => '11.5.4',
+    'version' => '12.0.0',
     'constraints' => [
         'depends' => [
-            'typo3' => '11.5.4',
+            'typo3' => '12.0.0',
         ],
         'conflicts' => [],
         'suggests' => [],
diff --git a/typo3/sysext/viewpage/composer.json b/typo3/sysext/viewpage/composer.json
index 99fd5d46d716..9311c4216fa2 100644
--- a/typo3/sysext/viewpage/composer.json
+++ b/typo3/sysext/viewpage/composer.json
@@ -19,14 +19,14 @@
 		"sort-packages": true
 	},
 	"require": {
-		"typo3/cms-core": "11.5.*@dev"
+		"typo3/cms-core": "12.0.*@dev"
 	},
 	"conflict": {
 		"typo3/cms": "*"
 	},
 	"extra": {
 		"branch-alias": {
-			"dev-master": "11.5.x-dev"
+			"dev-master": "12.0.x-dev"
 		},
 		"typo3/cms": {
 			"Package": {
diff --git a/typo3/sysext/viewpage/ext_emconf.php b/typo3/sysext/viewpage/ext_emconf.php
index 9774890586ad..c2ef595e8335 100644
--- a/typo3/sysext/viewpage/ext_emconf.php
+++ b/typo3/sysext/viewpage/ext_emconf.php
@@ -9,10 +9,10 @@ $EM_CONF[$_EXTKEY] = [
     'author' => 'TYPO3 Core Team',
     'author_email' => 'typo3cms@typo3.org',
     'author_company' => '',
-    'version' => '11.5.4',
+    'version' => '12.0.0',
     'constraints' => [
         'depends' => [
-            'typo3' => '11.5.4',
+            'typo3' => '12.0.0',
         ],
         'conflicts' => [],
         'suggests' => [],
diff --git a/typo3/sysext/workspaces/composer.json b/typo3/sysext/workspaces/composer.json
index 4a1e68215682..0b1bc8965714 100644
--- a/typo3/sysext/workspaces/composer.json
+++ b/typo3/sysext/workspaces/composer.json
@@ -19,7 +19,7 @@
 		"sort-packages": true
 	},
 	"require": {
-		"typo3/cms-core": "11.5.*@dev"
+		"typo3/cms-core": "12.0.*@dev"
 	},
 	"conflict": {
 		"typo3/cms": "*"
@@ -29,7 +29,7 @@
 	},
 	"extra": {
 		"branch-alias": {
-			"dev-master": "11.5.x-dev"
+			"dev-master": "12.0.x-dev"
 		},
 		"typo3/cms": {
 			"extension-key": "workspaces"
diff --git a/typo3/sysext/workspaces/ext_emconf.php b/typo3/sysext/workspaces/ext_emconf.php
index 6ca02ee4c21e..208373d74536 100644
--- a/typo3/sysext/workspaces/ext_emconf.php
+++ b/typo3/sysext/workspaces/ext_emconf.php
@@ -9,10 +9,10 @@ $EM_CONF[$_EXTKEY] = [
     'author_company' => '',
     'state' => 'stable',
     'clearCacheOnLoad' => 1,
-    'version' => '11.5.4',
+    'version' => '12.0.0',
     'constraints' => [
         'depends' => [
-            'typo3' => '11.5.4',
+            'typo3' => '12.0.0',
         ],
         'conflicts' => [],
         'suggests' => [],
-- 
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