diff --git a/composer.json b/composer.json
index f16f11173922297c7ccdaf9304f114dac751a80c..ce6967f593f2310dc1874c92c1d2c67376b56858 100644
--- a/composer.json
+++ b/composer.json
@@ -107,7 +107,7 @@
 			"always-add-alias-loader": true
 		},
 		"branch-alias": {
-			"dev-master": "10.2.x-dev"
+			"dev-master": "10.3.x-dev"
 		}
 	},
 	"scripts": {
diff --git a/composer.lock b/composer.lock
index 55c6a5c0fab3fc897bbff2ff4799c100a2c5cb94..b50630fa521f457af76786aea18ca1a61aa3b4fb 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": "2c2043fa833ab265530464d5ab0aca71",
+    "content-hash": "fb0eeafd738e660414d7ae094cbb35fb",
     "packages": [
         {
             "name": "cogpowered/finediff",
diff --git a/typo3/sysext/about/composer.json b/typo3/sysext/about/composer.json
index 9cc2f9fc20af066ce043879aa899cccaabe72e0e..86a88d7707f97149b48a2f966f7a100d94d7b63b 100644
--- a/typo3/sysext/about/composer.json
+++ b/typo3/sysext/about/composer.json
@@ -13,14 +13,14 @@
 		"sort-packages": true
 	},
 	"require": {
-		"typo3/cms-core": "10.2.0"
+		"typo3/cms-core": "10.3.*@dev"
 	},
 	"conflict": {
 		"typo3/cms": "*"
 	},
 	"extra": {
 		"branch-alias": {
-			"dev-master": "10.2.x-dev"
+			"dev-master": "10.3.x-dev"
 		},
 		"typo3/cms": {
 			"Package": {
diff --git a/typo3/sysext/about/ext_emconf.php b/typo3/sysext/about/ext_emconf.php
index 9e6abed7085bb124fe504fb617a09514509a15b5..b417ea1f3510dc370f03b6a132161efde4be60e9 100644
--- a/typo3/sysext/about/ext_emconf.php
+++ b/typo3/sysext/about/ext_emconf.php
@@ -7,10 +7,10 @@ $EM_CONF[$_EXTKEY] = [
     'clearCacheOnLoad' => 0,
     'author' => 'TYPO3 Core Team',
     'author_email' => 'typo3cms@typo3.org',
-    'version' => '10.2.0',
+    'version' => '10.3.0',
     'constraints' => [
         'depends' => [
-            'typo3' => '10.2.0',
+            'typo3' => '10.3.0',
         ],
         'conflicts' => [],
         'suggests' => [],
diff --git a/typo3/sysext/adminpanel/composer.json b/typo3/sysext/adminpanel/composer.json
index 39dc78df515a8e8fd946635a8c908a2e2f48b8a8..42659107d51ff3eab220a24553e50a40ee6d39f3 100644
--- a/typo3/sysext/adminpanel/composer.json
+++ b/typo3/sysext/adminpanel/composer.json
@@ -13,10 +13,10 @@
 		"sort-packages": true
 	},
 	"require": {
-		"typo3/cms-backend": "10.2.0",
-		"typo3/cms-core": "10.2.0",
-		"typo3/cms-fluid": "10.2.0",
-		"typo3/cms-frontend": "10.2.0",
+		"typo3/cms-backend": "10.3.*@dev",
+		"typo3/cms-core": "10.3.*@dev",
+		"typo3/cms-fluid": "10.3.*@dev",
+		"typo3/cms-frontend": "10.3.*@dev",
 		"typo3fluid/fluid": "^2.6.8",
 		"psr/http-message": "^1.0",
 		"psr/http-server-handler": "^1.0",
@@ -27,7 +27,7 @@
 	},
 	"extra": {
 		"branch-alias": {
-			"dev-master": "10.2.x-dev"
+			"dev-master": "10.3.x-dev"
 		},
 		"typo3/cms": {
 			"Package": {
diff --git a/typo3/sysext/adminpanel/ext_emconf.php b/typo3/sysext/adminpanel/ext_emconf.php
index 285fd0b33133438eb89e2681b718921713762fb7..3c1e4c4d1c0d8ce952062de02ac88a4784bcfa51 100644
--- a/typo3/sysext/adminpanel/ext_emconf.php
+++ b/typo3/sysext/adminpanel/ext_emconf.php
@@ -8,10 +8,10 @@ $EM_CONF[$_EXTKEY] = [
     'author' => 'TYPO3 Core Team',
     'author_email' => 'typo3cms@typo3.org',
     'author_company' => '',
-    'version' => '10.2.0',
+    'version' => '10.3.0',
     'constraints' => [
         'depends' => [
-            'typo3' => '10.2.0',
+            'typo3' => '10.3.0',
         ],
         '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 90326e4836de96ed08423c0292f6fed44488e58f..10fb96662442c699748b057a5ed134dcd5123ec1 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
@@ -9,10 +9,10 @@ $EM_CONF[$_EXTKEY] = [
     'state' => 'stable',
     'uploadfolder' => 0,
     'clearCacheOnLoad' => 1,
-    'version' => '10.2.0',
+    'version' => '10.3.0',
     'constraints' => [
         'depends' => [
-            'typo3' => '10.2.0',
+            'typo3' => '10.3.0',
         ],
         '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 48c76724eeeb880cc8a9dbaf028fc307e7f2400a..bf6d782260160b0691e43a135b436083048dcb0a 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
@@ -9,11 +9,11 @@ $EM_CONF[$_EXTKEY] = [
     'state' => 'stable',
     'uploadfolder' => 0,
     'clearCacheOnLoad' => 1,
-    'version' => '10.2.0',
+    'version' => '10.3.0',
     'constraints' => [
         'depends' => [
-            'typo3' => '10.2.0',
-            'a' => '10.2.0',
+            'typo3' => '10.3.0',
+            'a' => '10.3.0',
         ],
         'conflicts' => [],
         'suggests' => [],
diff --git a/typo3/sysext/backend/composer.json b/typo3/sysext/backend/composer.json
index d58b91604e7b3f5e8a7e1792623df21535127b99..65295d808763e9e32ae19dd49bba38a949759d07 100644
--- a/typo3/sysext/backend/composer.json
+++ b/typo3/sysext/backend/composer.json
@@ -14,8 +14,8 @@
 	},
 	"require": {
 		"psr/event-dispatcher": "^1.0",
-		"typo3/cms-core": "10.2.0",
-		"typo3/cms-recordlist": "10.2.0"
+		"typo3/cms-core": "10.3.*@dev",
+		"typo3/cms-recordlist": "10.3.*@dev"
 	},
 	"suggest": {
 		"typo3/cms-install": "To generate url to install tool in environment toolbar"
@@ -32,7 +32,7 @@
 	},
 	"extra": {
 		"branch-alias": {
-			"dev-master": "10.2.x-dev"
+			"dev-master": "10.3.x-dev"
 		},
 		"typo3/cms": {
 			"Package": {
diff --git a/typo3/sysext/backend/ext_emconf.php b/typo3/sysext/backend/ext_emconf.php
index 377920cccc839b52091bdb8f9d7f2930645e7c68..9e87c5e0b769e4921ae0dbee82be4b286e4b1176 100644
--- a/typo3/sysext/backend/ext_emconf.php
+++ b/typo3/sysext/backend/ext_emconf.php
@@ -8,11 +8,11 @@ $EM_CONF[$_EXTKEY] = [
     'author' => 'TYPO3 Core Team',
     'author_email' => 'typo3cms@typo3.org',
     'author_company' => '',
-    'version' => '10.2.0',
+    'version' => '10.3.0',
     'constraints' => [
         'depends' => [
-            'typo3' => '10.2.0',
-            'recordlist' => '10.2.0',
+            'typo3' => '10.3.0',
+            'recordlist' => '10.3.0',
         ],
         'conflicts' => [],
         'suggests' => [],
diff --git a/typo3/sysext/belog/composer.json b/typo3/sysext/belog/composer.json
index cd16546086952908f24a67a03a53d6d05206dfed..cdd099bda24e9f1d47b49c00f8140c2ce9cf6d23 100644
--- a/typo3/sysext/belog/composer.json
+++ b/typo3/sysext/belog/composer.json
@@ -13,14 +13,14 @@
 		"sort-packages": true
 	},
 	"require": {
-		"typo3/cms-core": "10.2.0"
+		"typo3/cms-core": "10.3.*@dev"
 	},
 	"conflict": {
 		"typo3/cms": "*"
 	},
 	"extra": {
 		"branch-alias": {
-			"dev-master": "10.2.x-dev"
+			"dev-master": "10.3.x-dev"
 		},
 		"typo3/cms": {
 			"Package": {
diff --git a/typo3/sysext/belog/ext_emconf.php b/typo3/sysext/belog/ext_emconf.php
index 117b2b2f2b8995c7882f0dbc9fbe73f6993e04b3..d295209bf82e5e4798e437d766ad57ba1fa93ce5 100644
--- a/typo3/sysext/belog/ext_emconf.php
+++ b/typo3/sysext/belog/ext_emconf.php
@@ -8,10 +8,10 @@ $EM_CONF[$_EXTKEY] = [
     'author' => 'TYPO3 Core Team',
     'author_email' => 'typo3cms@typo3.org',
     'author_company' => '',
-    'version' => '10.2.0',
+    'version' => '10.3.0',
     'constraints' => [
         'depends' => [
-            'typo3' => '10.2.0',
+            'typo3' => '10.3.0',
         ],
         'conflicts' => [],
         'suggests' => [],
diff --git a/typo3/sysext/beuser/composer.json b/typo3/sysext/beuser/composer.json
index 7a91bea219c8c46150688ee32520372abcf6582b..abef7a9ab126efb5c3832a079a2792890b0bf5c9 100644
--- a/typo3/sysext/beuser/composer.json
+++ b/typo3/sysext/beuser/composer.json
@@ -13,14 +13,14 @@
 		"sort-packages": true
 	},
 	"require": {
-		"typo3/cms-core": "10.2.0"
+		"typo3/cms-core": "10.3.*@dev"
 	},
 	"conflict": {
 		"typo3/cms": "*"
 	},
 	"extra": {
 		"branch-alias": {
-			"dev-master": "10.2.x-dev"
+			"dev-master": "10.3.x-dev"
 		},
 		"typo3/cms": {
 			"Package": {
diff --git a/typo3/sysext/beuser/ext_emconf.php b/typo3/sysext/beuser/ext_emconf.php
index 11b3e18fc58aec4c41283f3591093741b97c3644..075989b4c67478c730120fdd1708e75f3aedbeb1 100644
--- a/typo3/sysext/beuser/ext_emconf.php
+++ b/typo3/sysext/beuser/ext_emconf.php
@@ -8,10 +8,10 @@ $EM_CONF[$_EXTKEY] = [
     'author_company' => '',
     'state' => 'stable',
     'clearCacheOnLoad' => 0,
-    'version' => '10.2.0',
+    'version' => '10.3.0',
     'constraints' => [
         'depends' => [
-            'typo3' => '10.2.0',
+            'typo3' => '10.3.0',
         ],
         'conflicts' => [],
         'suggests' => [],
diff --git a/typo3/sysext/core/Classes/Core/SystemEnvironmentBuilder.php b/typo3/sysext/core/Classes/Core/SystemEnvironmentBuilder.php
index c8230f98ac30c8ebaae8fb2de4543815fc1f08b2..8e727a7aed278990208bd0d6d3484bb0ee7b2047 100644
--- a/typo3/sysext/core/Classes/Core/SystemEnvironmentBuilder.php
+++ b/typo3/sysext/core/Classes/Core/SystemEnvironmentBuilder.php
@@ -116,8 +116,8 @@ class SystemEnvironmentBuilder
         }
 
         // This version, branch and copyright
-        define('TYPO3_version', '10.2.0');
-        define('TYPO3_branch', '10.2');
+        define('TYPO3_version', '10.3.0-dev');
+        define('TYPO3_branch', '10.3');
         define('TYPO3_copyright_year', '1998-' . date('Y'));
 
         // TYPO3 external links
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 b7a4ad5b04b8081f9fecc154341db462d1f0e666..8fa3b710576d68410b821250cdd837eb97c87260 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
@@ -3,7 +3,7 @@ $EM_CONF[$_EXTKEY] = [
     'title' => 'test extension',
     'description' => '',
     'category' => '',
-    'version' => '10.2.0',
+    'version' => '10.3.0',
     'state' => 'beta',
     'clearCacheOnLoad' => 0,
     'author' => 'Christian Kuhn',
@@ -11,7 +11,7 @@ $EM_CONF[$_EXTKEY] = [
     'author_company' => '',
     'constraints' => [
         'depends' => [
-            'typo3' => '10.2.0',
+            'typo3' => '10.3.0',
         ],
         '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 ebc621399bdca04abff4c0ecd6eef3854bd00f34..a5c61dd93dd28488a23e06204356e3338dbece34 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
@@ -3,14 +3,14 @@ $EM_CONF[$_EXTKEY] = [
     'title' => 'ExpressionBuilder Test',
     'description' => 'ExpressionBuilder Test',
     'category' => 'example',
-    'version' => '10.2.0',
+    'version' => '10.3.0',
     'state' => 'beta',
     'clearCacheOnLoad' => 0,
     'author' => 'Christian Kuhn',
     'author_email' => 'lolli@schwarzbu.ch',
     'constraints' => [
         'depends' => [
-            'typo3' => '10.2.0',
+            'typo3' => '10.3.0',
         ],
         '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 46f704e7ee1be2c85dec907723742d861b5b6aa7..efc87280776b186d34873acdcfbaafb74702e819 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
@@ -3,7 +3,7 @@ $EM_CONF[$_EXTKEY] = [
     'title' => 'Fixture extension for functional tests for Inline Relational Record Editing IRRE',
     'description' => 'based on irre_tutorial extension created by Oliver Hader, see http://forge.typo3.org/projects/extension-irre_tutorial',
     'category' => 'example',
-    'version' => '10.2.0',
+    'version' => '10.3.0',
     'state' => 'beta',
     'clearCacheOnLoad' => 0,
     'author' => 'Oliver Hader',
@@ -11,8 +11,8 @@ $EM_CONF[$_EXTKEY] = [
     'author_company' => '',
     'constraints' => [
         'depends' => [
-            'typo3' => '10.2.0',
-            'workspaces' => '10.2.0',
+            'typo3' => '10.3.0',
+            'workspaces' => '10.3.0',
         ],
         '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 d2f8201cf4ef4d11d806fbc89ef4788fb53c72f5..3d32d11f2fba81a9f7b81050cd04df54871d2b3c 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
@@ -3,7 +3,7 @@ $EM_CONF[$_EXTKEY] = [
     'title' => 'DataHandler Test',
     'description' => 'DataHandler Test',
     'category' => 'example',
-    'version' => '10.2.0',
+    'version' => '10.3.0',
     'state' => 'beta',
     'clearCacheOnLoad' => 0,
     'author' => 'Oliver Hader',
@@ -11,8 +11,8 @@ $EM_CONF[$_EXTKEY] = [
     'author_company' => '',
     'constraints' => [
         'depends' => [
-            'typo3' => '10.2.0',
-            'workspaces' => '10.2.0',
+            'typo3' => '10.3.0',
+            'workspaces' => '10.3.0',
         ],
         '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 12caa69a0ad38d21f615115af48ebf4514437846..1f28aec3ea4285b29419f50265e4d520056217d8 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
@@ -3,7 +3,7 @@ $EM_CONF[$_EXTKEY] = [
     'title' => 'MetaData Test',
     'description' => 'MetaData Test',
     'category' => 'example',
-    'version' => '10.2.0',
+    'version' => '10.3.0',
     'state' => 'beta',
     'clearCacheOnLoad' => 0,
     'author' => 'Frank Nägler',
@@ -11,8 +11,8 @@ $EM_CONF[$_EXTKEY] = [
     'author_company' => '',
     'constraints' => [
         'depends' => [
-            'typo3' => '10.2.0',
-            'seo' => '10.2.0',
+            'typo3' => '10.3.0',
+            'seo' => '10.3.0',
         ],
         '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 81297afa6c85f854d3647aec425239eb397c7d29..2b28d8b9c15b8733ef8aaff5bb4e7b25c6c1ae6b 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
@@ -3,7 +3,7 @@ $EM_CONF[$_EXTKEY] = [
     'title' => 'Test Resources',
     'description' => 'Test Resources',
     'category' => 'example',
-    'version' => '10.2.0',
+    'version' => '10.3.0',
     'state' => 'beta',
     'clearCacheOnLoad' => 0,
     'author' => 'Oliver Hader',
@@ -11,7 +11,7 @@ $EM_CONF[$_EXTKEY] = [
     'author_company' => '',
     'constraints' => [
         'depends' => [
-            'typo3' => '10.2.0'
+            'typo3' => '10.3.0'
         ],
         '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 fa710863d00646aa1595d9fd2f63ff89fa420e12..09fa0569c00e8714a43c924b7d1d2ad056641592 100644
--- a/typo3/sysext/core/Tests/Unit/Utility/Fixtures/ext_emconf.php
+++ b/typo3/sysext/core/Tests/Unit/Utility/Fixtures/ext_emconf.php
@@ -8,7 +8,7 @@ $EM_CONF[$_EXTKEY] = [
     'author' => '',
     'author_email' => '',
     'author_company' => '',
-    'version' => '10.2.0',
+    'version' => '10.3.0',
     'constraints' => [
         'depends' => [],
         'conflicts' => [],
diff --git a/typo3/sysext/core/composer.json b/typo3/sysext/core/composer.json
index ffb56a88c573df6531eb2c471d57663dfd5310e6..b6a2b706d2c1fe5e72edd42b0f7af615004d11f3 100644
--- a/typo3/sysext/core/composer.json
+++ b/typo3/sysext/core/composer.json
@@ -84,7 +84,7 @@
 	},
 	"extra": {
 		"branch-alias": {
-			"dev-master": "10.2.x-dev"
+			"dev-master": "10.3.x-dev"
 		},
 		"typo3/cms": {
 			"Package": {
diff --git a/typo3/sysext/core/ext_emconf.php b/typo3/sysext/core/ext_emconf.php
index cb1061c50d6e8dff13bcaf1a9442d357f78db3b2..cde90f7ca9d1d6d5027683771d72eb9994f762bb 100644
--- a/typo3/sysext/core/ext_emconf.php
+++ b/typo3/sysext/core/ext_emconf.php
@@ -8,7 +8,7 @@ $EM_CONF[$_EXTKEY] = [
     'author' => 'TYPO3 Core Team',
     'author_email' => 'typo3cms@typo3.org',
     'author_company' => '',
-    'version' => '10.2.0',
+    'version' => '10.3.0',
     'constraints' => [
         'depends' => [],
         'conflicts' => [],
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 9892bd1b4cda301029d335ec6836ceaef48d20b0..1c421106409d8d0375773410a10e987c224eca6d 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
@@ -8,10 +8,10 @@ $EM_CONF[$_EXTKEY] = [
     'author_email' => '',
     'state' => 'stable',
     'clearCacheOnLoad' => 1,
-    'version' => '10.2.0',
+    'version' => '10.3.0',
     'constraints' => [
         'depends' => [
-            'typo3' => '10.2.0',
+            'typo3' => '10.3.0',
         ],
         '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 90326e4836de96ed08423c0292f6fed44488e58f..10fb96662442c699748b057a5ed134dcd5123ec1 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
@@ -9,10 +9,10 @@ $EM_CONF[$_EXTKEY] = [
     'state' => 'stable',
     'uploadfolder' => 0,
     'clearCacheOnLoad' => 1,
-    'version' => '10.2.0',
+    'version' => '10.3.0',
     'constraints' => [
         'depends' => [
-            'typo3' => '10.2.0',
+            'typo3' => '10.3.0',
         ],
         '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 90326e4836de96ed08423c0292f6fed44488e58f..10fb96662442c699748b057a5ed134dcd5123ec1 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
@@ -9,10 +9,10 @@ $EM_CONF[$_EXTKEY] = [
     'state' => 'stable',
     'uploadfolder' => 0,
     'clearCacheOnLoad' => 1,
-    'version' => '10.2.0',
+    'version' => '10.3.0',
     'constraints' => [
         'depends' => [
-            'typo3' => '10.2.0',
+            'typo3' => '10.3.0',
         ],
         'conflicts' => [],
         'suggests' => [],
diff --git a/typo3/sysext/extbase/composer.json b/typo3/sysext/extbase/composer.json
index cb89b20f0b673639575ead8c71b89ce834de5d45..f0d46d51a05efc32407e43a5d61aeaa15c52a6ee 100644
--- a/typo3/sysext/extbase/composer.json
+++ b/typo3/sysext/extbase/composer.json
@@ -17,7 +17,7 @@
 		"symfony/dependency-injection": "^4.4 || ^5.0",
 		"symfony/property-access": "^4.4 || ^5.0",
 		"symfony/property-info": "^4.4 || ^5.0",
-		"typo3/cms-core": "10.2.0",
+		"typo3/cms-core": "10.3.*@dev",
 		"webmozart/assert": "^1.0"
 	},
 	"suggest": {
@@ -29,7 +29,7 @@
 	},
 	"extra": {
 		"branch-alias": {
-			"dev-master": "10.2.x-dev"
+			"dev-master": "10.3.x-dev"
 		},
 		"typo3/cms": {
 			"Package": {
diff --git a/typo3/sysext/extbase/ext_emconf.php b/typo3/sysext/extbase/ext_emconf.php
index b23d82d6da3251b5f4467398ddd5efb8aad75212..a35575a94267f87687df19c54c6155edff8c1d43 100644
--- a/typo3/sysext/extbase/ext_emconf.php
+++ b/typo3/sysext/extbase/ext_emconf.php
@@ -8,10 +8,10 @@ $EM_CONF[$_EXTKEY] = [
     'author_company' => '',
     'state' => 'stable',
     'clearCacheOnLoad' => 1,
-    'version' => '10.2.0',
+    'version' => '10.3.0',
     'constraints' => [
         'depends' => [
-            'typo3' => '10.2.0',
+            'typo3' => '10.3.0',
         ],
         'conflicts' => [],
         'suggests' => [
diff --git a/typo3/sysext/extensionmanager/composer.json b/typo3/sysext/extensionmanager/composer.json
index f5b6a714250310b8c04714384025ad53b6f27cfc..ee5394cc6a3d9b7636bb1d1d1b4d94bc6b0295ea 100644
--- a/typo3/sysext/extensionmanager/composer.json
+++ b/typo3/sysext/extensionmanager/composer.json
@@ -13,14 +13,14 @@
 		"sort-packages": true
 	},
 	"require": {
-		"typo3/cms-core": "10.2.0"
+		"typo3/cms-core": "10.3.*@dev"
 	},
 	"conflict": {
 		"typo3/cms": "*"
 	},
 	"extra": {
 		"branch-alias": {
-			"dev-master": "10.2.x-dev"
+			"dev-master": "10.3.x-dev"
 		},
 		"typo3/cms": {
 			"Package": {
diff --git a/typo3/sysext/extensionmanager/ext_emconf.php b/typo3/sysext/extensionmanager/ext_emconf.php
index cebbae2d49dee9d24f80e58b5793483bd36f7e14..c07e8834ef9ddce515ca5b76a17db000887aaa2c 100644
--- a/typo3/sysext/extensionmanager/ext_emconf.php
+++ b/typo3/sysext/extensionmanager/ext_emconf.php
@@ -8,10 +8,10 @@ $EM_CONF[$_EXTKEY] = [
     'author' => 'TYPO3 Core Team',
     'author_email' => 'typo3cms@typo3.org',
     'author_company' => '',
-    'version' => '10.2.0',
+    'version' => '10.3.0',
     'constraints' => [
         'depends' => [
-            'typo3' => '10.2.0',
+            'typo3' => '10.3.0',
         ],
         'conflicts' => [],
         'suggests' => [],
diff --git a/typo3/sysext/felogin/composer.json b/typo3/sysext/felogin/composer.json
index c3adc621bb30cd882605d26fdb855dcdfa4b29a6..6601cb43cbbd0aaed68c8ea8d0b7611d3591eb16 100644
--- a/typo3/sysext/felogin/composer.json
+++ b/typo3/sysext/felogin/composer.json
@@ -13,14 +13,14 @@
 		"sort-packages": true
 	},
 	"require": {
-		"typo3/cms-core": "10.2.0"
+		"typo3/cms-core": "10.3.*@dev"
 	},
 	"conflict": {
 		"typo3/cms": "*"
 	},
 	"extra": {
 		"branch-alias": {
-			"dev-master": "10.2.x-dev"
+			"dev-master": "10.3.x-dev"
 		},
 		"typo3/cms": {
 			"Package": {
diff --git a/typo3/sysext/felogin/ext_emconf.php b/typo3/sysext/felogin/ext_emconf.php
index e11502216058ffbe0f0d45a21ac5ca81c93748df..0a32226f1f97a5bc874a1296527237bac47d7afc 100644
--- a/typo3/sysext/felogin/ext_emconf.php
+++ b/typo3/sysext/felogin/ext_emconf.php
@@ -8,10 +8,10 @@ $EM_CONF[$_EXTKEY] = [
     'author_company' => '',
     'state' => 'stable',
     'clearCacheOnLoad' => 1,
-    'version' => '10.2.0',
+    'version' => '10.3.0',
     'constraints' => [
         'depends' => [
-            'typo3' => '10.2.0',
+            'typo3' => '10.3.0',
         ],
         'conflicts' => [],
         'suggests' => [],
diff --git a/typo3/sysext/filelist/composer.json b/typo3/sysext/filelist/composer.json
index b6b7ed2203af7755cf4c08369cdf938bfaf05a95..4c465f34be2fff7f8523c4bec3e5f9d819155fe2 100644
--- a/typo3/sysext/filelist/composer.json
+++ b/typo3/sysext/filelist/composer.json
@@ -13,14 +13,14 @@
 		"sort-packages": true
 	},
 	"require": {
-		"typo3/cms-core": "10.2.0"
+		"typo3/cms-core": "10.3.*@dev"
 	},
 	"conflict": {
 		"typo3/cms": "*"
 	},
 	"extra": {
 		"branch-alias": {
-			"dev-master": "10.2.x-dev"
+			"dev-master": "10.3.x-dev"
 		},
 		"typo3/cms": {
 			"Package": {
diff --git a/typo3/sysext/filelist/ext_emconf.php b/typo3/sysext/filelist/ext_emconf.php
index 889be1f970747ce5ce43fae4acb0c17a6a78b056..0a237485bd832f2867bf9024933f0cade7e8a3e1 100644
--- a/typo3/sysext/filelist/ext_emconf.php
+++ b/typo3/sysext/filelist/ext_emconf.php
@@ -8,10 +8,10 @@ $EM_CONF[$_EXTKEY] = [
     'author' => 'TYPO3 Core Team',
     'author_email' => 'typo3cms@typo3.org',
     'author_company' => '',
-    'version' => '10.2.0',
+    'version' => '10.3.0',
     'constraints' => [
         'depends' => [
-            'typo3' => '10.2.0',
+            'typo3' => '10.3.0',
         ],
         'conflicts' => [],
         'suggests' => [],
diff --git a/typo3/sysext/filemetadata/composer.json b/typo3/sysext/filemetadata/composer.json
index aaea08e6aad1156df76059cd43b76727efd24bfd..82893e149bbcc4d68f54055b88ee4f08d62802ba 100644
--- a/typo3/sysext/filemetadata/composer.json
+++ b/typo3/sysext/filemetadata/composer.json
@@ -13,14 +13,14 @@
 		"sort-packages": true
 	},
 	"require": {
-		"typo3/cms-core": "10.2.0"
+		"typo3/cms-core": "10.3.*@dev"
 	},
 	"conflict": {
 		"typo3/cms": "*"
 	},
 	"extra": {
 		"branch-alias": {
-			"dev-master": "10.2.x-dev"
+			"dev-master": "10.3.x-dev"
 		},
 		"typo3/cms": {
 			"extension-key": "filemetadata"
diff --git a/typo3/sysext/filemetadata/ext_emconf.php b/typo3/sysext/filemetadata/ext_emconf.php
index 46d36c38544fba479bbab3787cb6c04c53c6bf23..b96065e10523e196e0b642e65268450f3e43f67a 100644
--- a/typo3/sysext/filemetadata/ext_emconf.php
+++ b/typo3/sysext/filemetadata/ext_emconf.php
@@ -7,10 +7,10 @@ $EM_CONF[$_EXTKEY] = [
     'author_email' => 'typo3cms@typo3.org',
     'state' => 'stable',
     'clearCacheOnLoad' => 0,
-    'version' => '10.2.0',
+    'version' => '10.3.0',
     'constraints' => [
         'depends' => [
-            'typo3' => '10.2.0',
+            'typo3' => '10.3.0',
         ],
         '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 949a99b76a90041429869c2fcb451f503e5fb783..bc355f673a537ccfdb50ca0955e49d310a6508e3 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
@@ -48,7 +48,7 @@
     },
     "extra": {
         "branch-alias": {
-            "dev-master": "10.2.x-dev"
+            "dev-master": "10.3.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 5978949b22379d5bb196d35a85b9c66189da209c..b374b6e07375abf55452f7a401cc83d7a172f78a 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
@@ -8,10 +8,10 @@ $EM_CONF[$_EXTKEY] = [
     'author_company' => 'helhum.io',
     'state' => 'stable',
     'clearCacheOnLoad' => 0,
-    'version' => '10.2.0',
+    'version' => '10.3.0',
     'constraints' => [
         'depends' => [
-            'typo3' => '10.2.0',
+            'typo3' => '10.3.0',
         ],
         'conflicts' => [],
         'suggests' => [],
diff --git a/typo3/sysext/fluid/composer.json b/typo3/sysext/fluid/composer.json
index 2cdf3f3b06cf8a037e93b7a1050980fee3fe63d0..33df79e332cfc50f2558d66ec31264ff47aef2a5 100644
--- a/typo3/sysext/fluid/composer.json
+++ b/typo3/sysext/fluid/composer.json
@@ -14,8 +14,8 @@
 	},
 	"require": {
 		"symfony/dependency-injection": "^4.4 || ^5.0",
-		"typo3/cms-core": "10.2.0",
-		"typo3/cms-extbase": "10.2.0",
+		"typo3/cms-core": "10.3.*@dev",
+		"typo3/cms-extbase": "10.3.*@dev",
 		"typo3fluid/fluid": "^2.6.8"
 	},
 	"conflict": {
@@ -23,7 +23,7 @@
 	},
 	"extra": {
 		"branch-alias": {
-			"dev-master": "10.2.x-dev"
+			"dev-master": "10.3.x-dev"
 		},
 		"typo3/cms": {
 			"Package": {
diff --git a/typo3/sysext/fluid/ext_emconf.php b/typo3/sysext/fluid/ext_emconf.php
index 16847c3a6aa5b84324801260685e2c872f6f35d8..8b8c230edec80607d35b3311d719cb955ad3055b 100644
--- a/typo3/sysext/fluid/ext_emconf.php
+++ b/typo3/sysext/fluid/ext_emconf.php
@@ -8,11 +8,11 @@ $EM_CONF[$_EXTKEY] = [
     'author_company' => '',
     'state' => 'stable',
     'clearCacheOnLoad' => 0,
-    'version' => '10.2.0',
+    'version' => '10.3.0',
     'constraints' => [
         'depends' => [
-            'core' => '10.2.0',
-            'extbase' => '10.2.0',
+            'core' => '10.3.0',
+            'extbase' => '10.3.0',
         ],
         'conflicts' => [],
         'suggests' => [],
diff --git a/typo3/sysext/fluid_styled_content/composer.json b/typo3/sysext/fluid_styled_content/composer.json
index 959147149b8aa4ebcaf7eed60bad91323705c7a2..b1ba560ad065f3a811c25706069c83bcb7534947 100644
--- a/typo3/sysext/fluid_styled_content/composer.json
+++ b/typo3/sysext/fluid_styled_content/composer.json
@@ -13,16 +13,16 @@
 		"sort-packages": true
 	},
 	"require": {
-		"typo3/cms-core": "10.2.0",
-		"typo3/cms-fluid": "10.2.0",
-		"typo3/cms-frontend": "10.2.0"
+		"typo3/cms-core": "10.3.*@dev",
+		"typo3/cms-fluid": "10.3.*@dev",
+		"typo3/cms-frontend": "10.3.*@dev"
 	},
 	"conflict": {
 		"typo3/cms": "*"
 	},
 	"extra": {
 		"branch-alias": {
-			"dev-master": "10.2.x-dev"
+			"dev-master": "10.3.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 4b2b103922767a0822e4b225d665514fd6f759d3..7b385e921a3e88f98d12857acc7eadad8cd5bdd8 100644
--- a/typo3/sysext/fluid_styled_content/ext_emconf.php
+++ b/typo3/sysext/fluid_styled_content/ext_emconf.php
@@ -6,12 +6,12 @@ $EM_CONF[$_EXTKEY] = [
     'state' => 'stable',
     'author' => 'TYPO3 Core Team',
     'author_email' => 'typo3cms@typo3.org',
-    'version' => '10.2.0',
+    'version' => '10.3.0',
     'constraints' => [
         'depends' => [
-            'typo3' => '10.2.0',
-            'fluid' => '10.2.0',
-            'frontend' => '10.2.0',
+            'typo3' => '10.3.0',
+            'fluid' => '10.3.0',
+            'frontend' => '10.3.0',
         ],
         'conflicts' => [],
         'suggests' => [],
diff --git a/typo3/sysext/form/Tests/Functional/Hooks/Fixtures/test_resources/ext_emconf.php b/typo3/sysext/form/Tests/Functional/Hooks/Fixtures/test_resources/ext_emconf.php
index 81297afa6c85f854d3647aec425239eb397c7d29..2b28d8b9c15b8733ef8aaff5bb4e7b25c6c1ae6b 100644
--- a/typo3/sysext/form/Tests/Functional/Hooks/Fixtures/test_resources/ext_emconf.php
+++ b/typo3/sysext/form/Tests/Functional/Hooks/Fixtures/test_resources/ext_emconf.php
@@ -3,7 +3,7 @@ $EM_CONF[$_EXTKEY] = [
     'title' => 'Test Resources',
     'description' => 'Test Resources',
     'category' => 'example',
-    'version' => '10.2.0',
+    'version' => '10.3.0',
     'state' => 'beta',
     'clearCacheOnLoad' => 0,
     'author' => 'Oliver Hader',
@@ -11,7 +11,7 @@ $EM_CONF[$_EXTKEY] = [
     'author_company' => '',
     'constraints' => [
         'depends' => [
-            'typo3' => '10.2.0'
+            'typo3' => '10.3.0'
         ],
         'conflicts' => [],
         'suggests' => [],
diff --git a/typo3/sysext/form/composer.json b/typo3/sysext/form/composer.json
index 898bb033a46c86ce817a75e3bd3ea6f0ac7f89be..ab399dc3cda73b57d8c6dc24c220c1561b0f708d 100644
--- a/typo3/sysext/form/composer.json
+++ b/typo3/sysext/form/composer.json
@@ -15,7 +15,7 @@
 	"require": {
 		"psr/http-message": "^1.0",
 		"symfony/expression-language": "^4.4 || ^5.0",
-		"typo3/cms-core": "10.2.0"
+		"typo3/cms-core": "10.3.*@dev"
 	},
 	"suggest": {
 		"typo3/cms-filelist": "Listing of files in the directory",
@@ -26,7 +26,7 @@
 	},
 	"extra": {
 		"branch-alias": {
-			"dev-master": "10.2.x-dev"
+			"dev-master": "10.3.x-dev"
 		},
 		"typo3/cms": {
 			"Package": {
diff --git a/typo3/sysext/form/ext_emconf.php b/typo3/sysext/form/ext_emconf.php
index 0052a989326b3eab6230783d243ae2125169b6b6..63ca57a6b4e0e0d361a8dd8b829e289245f83687 100644
--- a/typo3/sysext/form/ext_emconf.php
+++ b/typo3/sysext/form/ext_emconf.php
@@ -8,15 +8,15 @@ $EM_CONF[$_EXTKEY] = [
     'author' => 'TYPO3 Core Team',
     'author_email' => 'typo3cms@typo3.org',
     'author_company' => '',
-    'version' => '10.2.0',
+    'version' => '10.3.0',
     'constraints' => [
         'depends' => [
-            'typo3' => '10.2.0',
+            'typo3' => '10.3.0',
         ],
         'conflicts' => [],
         'suggests' => [
-            'filelist' => '10.2.0',
-            'impexp' => '10.2.0',
+            'filelist' => '10.3.0',
+            'impexp' => '10.3.0',
         ],
     ],
 ];
diff --git a/typo3/sysext/frontend/composer.json b/typo3/sysext/frontend/composer.json
index 484f15313cf5b6e67dd56a15b63cac120916771a..7d23443fa497d0d7001c5345b9630a02855f8778 100644
--- a/typo3/sysext/frontend/composer.json
+++ b/typo3/sysext/frontend/composer.json
@@ -13,7 +13,7 @@
 		"sort-packages": true
 	},
 	"require": {
-		"typo3/cms-core": "10.2.0"
+		"typo3/cms-core": "10.3.*@dev"
 	},
 	"conflict": {
 		"typo3/cms": "*"
@@ -23,7 +23,7 @@
 	},
 	"extra": {
 		"branch-alias": {
-			"dev-master": "10.2.x-dev"
+			"dev-master": "10.3.x-dev"
 		},
 		"typo3/cms": {
 			"Package": {
diff --git a/typo3/sysext/frontend/ext_emconf.php b/typo3/sysext/frontend/ext_emconf.php
index 53d25ced8b6dc33097c40dae5d39ae4c2dddafe2..7cb92f3f2c5eab1ef0b634fd859e578f5dd1dbdd 100644
--- a/typo3/sysext/frontend/ext_emconf.php
+++ b/typo3/sysext/frontend/ext_emconf.php
@@ -8,10 +8,10 @@ $EM_CONF[$_EXTKEY] = [
     'author' => 'TYPO3 Core Team',
     'author_email' => 'typo3cms@typo3.org',
     'author_company' => '',
-    'version' => '10.2.0',
+    'version' => '10.3.0',
     'constraints' => [
         'depends' => [
-            'typo3' => '10.2.0',
+            'typo3' => '10.3.0',
         ],
         '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 54349691829d88bd3e861cf33d375fa9e8665dd3..d74354469c188886da0a4937ce4e5f57ca6b1503 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
@@ -4,7 +4,7 @@ $EM_CONF[$_EXTKEY] = [
     'title' => 'Impexp test extension',
     'description' => '',
     'category' => '',
-    'version' => '10.2.0',
+    'version' => '10.3.0',
     'state' => 'beta',
     'clearCacheOnLoad' => 1,
     'author' => 'Marc Bastian Heinrichs',
@@ -12,7 +12,7 @@ $EM_CONF[$_EXTKEY] = [
     'author_company' => '',
     'constraints' => [
         'depends' => [
-            'typo3' => '10.2.0',
+            'typo3' => '10.3.0',
         ],
         'conflicts' => [],
         'suggests' => [],
diff --git a/typo3/sysext/impexp/composer.json b/typo3/sysext/impexp/composer.json
index e565a4617c8b39a80eb5631a6c49d64a5d2fd893..8800fe76ee186987864a6388550860c50554b861 100644
--- a/typo3/sysext/impexp/composer.json
+++ b/typo3/sysext/impexp/composer.json
@@ -13,14 +13,14 @@
 		"sort-packages": true
 	},
 	"require": {
-		"typo3/cms-core": "10.2.0"
+		"typo3/cms-core": "10.3.*@dev"
 	},
 	"conflict": {
 		"typo3/cms": "*"
 	},
 	"extra": {
 		"branch-alias": {
-			"dev-master": "10.2.x-dev"
+			"dev-master": "10.3.x-dev"
 		},
 		"typo3/cms": {
 			"Package": {
diff --git a/typo3/sysext/impexp/ext_emconf.php b/typo3/sysext/impexp/ext_emconf.php
index e3d467474c4c3c8a40860974c6287d9c666dee24..4a536e55a182bd041cd50a8c6d8bd4941cc8bd7e 100644
--- a/typo3/sysext/impexp/ext_emconf.php
+++ b/typo3/sysext/impexp/ext_emconf.php
@@ -8,10 +8,10 @@ $EM_CONF[$_EXTKEY] = [
     'author' => 'TYPO3 Core Team',
     'author_email' => 'typo3cms@typo3.org',
     'author_company' => '',
-    'version' => '10.2.0',
+    'version' => '10.3.0',
     'constraints' => [
         'depends' => [
-            'typo3' => '10.2.0',
+            'typo3' => '10.3.0',
         ],
         'conflicts' => [],
         'suggests' => [],
diff --git a/typo3/sysext/indexed_search/composer.json b/typo3/sysext/indexed_search/composer.json
index c9f6bbc50b440e61dfcc8753cb00f40a3402edf1..dbe3beb6b9419ed334da715a17073250d6edf2cb 100644
--- a/typo3/sysext/indexed_search/composer.json
+++ b/typo3/sysext/indexed_search/composer.json
@@ -13,7 +13,7 @@
 		"sort-packages": true
 	},
 	"require": {
-		"typo3/cms-core": "10.2.0"
+		"typo3/cms-core": "10.3.*@dev"
 	},
 	"conflict": {
 		"typo3/cms": "*"
@@ -23,7 +23,7 @@
 	},
 	"extra": {
 		"branch-alias": {
-			"dev-master": "10.2.x-dev"
+			"dev-master": "10.3.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 94601a102e1d673ff8ac1b8ead4dab43b8657e6e..760bdad27ea536f0fa9b562ef89ceb5c5d64dc34 100644
--- a/typo3/sysext/indexed_search/ext_emconf.php
+++ b/typo3/sysext/indexed_search/ext_emconf.php
@@ -8,10 +8,10 @@ $EM_CONF[$_EXTKEY] = [
     'author' => 'TYPO3 Core Team',
     'author_email' => 'typo3cms@typo3.org',
     'author_company' => '',
-    'version' => '10.2.0',
+    'version' => '10.3.0',
     'constraints' => [
         'depends' => [
-            'typo3' => '10.2.0',
+            'typo3' => '10.3.0',
         ],
         'conflicts' => [],
         'suggests' => [
diff --git a/typo3/sysext/info/composer.json b/typo3/sysext/info/composer.json
index f2faf716a6b0a2c0d41588697d814257ac41a8fd..90989494d0c9cea48406fb50030c001ac3085174 100644
--- a/typo3/sysext/info/composer.json
+++ b/typo3/sysext/info/composer.json
@@ -13,7 +13,7 @@
 		"sort-packages": true
 	},
 	"require": {
-		"typo3/cms-core": "10.2.0"
+		"typo3/cms-core": "10.3.*@dev"
 	},
 	"conflict": {
 		"typo3/cms": "*"
@@ -23,7 +23,7 @@
 	},
 	"extra": {
 		"branch-alias": {
-			"dev-master": "10.2.x-dev"
+			"dev-master": "10.3.x-dev"
 		},
 		"typo3/cms": {
 			"Package": {
diff --git a/typo3/sysext/info/ext_emconf.php b/typo3/sysext/info/ext_emconf.php
index b798bb7f6477c005ec789cea4899ad5127ee00f3..caa714ffd82171bda020b9a0e99cc4283e02c8f1 100644
--- a/typo3/sysext/info/ext_emconf.php
+++ b/typo3/sysext/info/ext_emconf.php
@@ -8,10 +8,10 @@ $EM_CONF[$_EXTKEY] = [
     'author' => 'TYPO3 Core Team',
     'author_email' => 'typo3cms@typo3.org',
     'author_company' => '',
-    'version' => '10.2.0',
+    'version' => '10.3.0',
     'constraints' => [
         'depends' => [
-            'typo3' => '10.2.0',
+            'typo3' => '10.3.0',
         ],
         'conflicts' => [],
         'suggests' => [],
diff --git a/typo3/sysext/install/composer.json b/typo3/sysext/install/composer.json
index 0ceb1cdb390b91780cbd9a81b56b6c8ec8beb688..6ac380443b10bea7fe9eb1ba6f483e3deba55a16 100644
--- a/typo3/sysext/install/composer.json
+++ b/typo3/sysext/install/composer.json
@@ -15,16 +15,16 @@
 	"require": {
 		"nikic/php-parser": "^4.3",
 		"symfony/finder": "^4.4 || ^5.0",
-		"typo3/cms-core": "10.2.0",
-		"typo3/cms-extbase": "10.2.0",
-		"typo3/cms-fluid": "10.2.0"
+		"typo3/cms-core": "10.3.*@dev",
+		"typo3/cms-extbase": "10.3.*@dev",
+		"typo3/cms-fluid": "10.3.*@dev"
 	},
 	"conflict": {
 		"typo3/cms": "*"
 	},
 	"extra": {
 		"branch-alias": {
-			"dev-master": "10.2.x-dev"
+			"dev-master": "10.3.x-dev"
 		},
 		"typo3/cms": {
 			"Package": {
diff --git a/typo3/sysext/install/ext_emconf.php b/typo3/sysext/install/ext_emconf.php
index ad1e0e2b410de7f87ef933848c84e46ccdcb9ee4..f0e7dd9f9e5294fa6ff4279334909accacd9d384 100644
--- a/typo3/sysext/install/ext_emconf.php
+++ b/typo3/sysext/install/ext_emconf.php
@@ -8,12 +8,12 @@ $EM_CONF[$_EXTKEY] = [
     'author' => 'TYPO3 Core Team',
     'author_email' => 'typo3cms@typo3.org',
     'author_company' => '',
-    'version' => '10.2.0',
+    'version' => '10.3.0',
     'constraints' => [
         'depends' => [
-            'typo3' => '10.2.0',
-            'extbase' => '10.2.0',
-            'fluid' => '10.2.0',
+            'typo3' => '10.3.0',
+            'extbase' => '10.3.0',
+            'fluid' => '10.3.0',
         ],
         'conflicts' => [],
         'suggests' => [],
diff --git a/typo3/sysext/linkvalidator/composer.json b/typo3/sysext/linkvalidator/composer.json
index 21650a7cdf6026c1fd9c9886da15e939010e7894..a9e7afb51d77c067bfc1d97175ad1fbb51ca8f5f 100644
--- a/typo3/sysext/linkvalidator/composer.json
+++ b/typo3/sysext/linkvalidator/composer.json
@@ -13,8 +13,8 @@
 		"sort-packages": true
 	},
 	"require": {
-		"typo3/cms-core": "10.2.0",
-		"typo3/cms-info": "10.2.0"
+		"typo3/cms-core": "10.3.*@dev",
+		"typo3/cms-info": "10.3.*@dev"
 	},
 	"suggest": {
 		"typo3/cms-scheduler": "Regular checks of links"
@@ -24,7 +24,7 @@
 	},
 	"extra": {
 		"branch-alias": {
-			"dev-master": "10.2.x-dev"
+			"dev-master": "10.3.x-dev"
 		},
 		"typo3/cms": {
 			"extension-key": "linkvalidator"
diff --git a/typo3/sysext/linkvalidator/ext_emconf.php b/typo3/sysext/linkvalidator/ext_emconf.php
index 5c4dc201ad6a5ef99c4c20574466bcce83d8bc51..8219af1a76622390ebfde1610b2be60d583289f5 100644
--- a/typo3/sysext/linkvalidator/ext_emconf.php
+++ b/typo3/sysext/linkvalidator/ext_emconf.php
@@ -8,11 +8,11 @@ $EM_CONF[$_EXTKEY] = [
     'author_company' => '',
     'state' => 'stable',
     'clearCacheOnLoad' => 0,
-    'version' => '10.2.0',
+    'version' => '10.3.0',
     'constraints' => [
         'depends' => [
-            'typo3' => '10.2.0',
-            'info' => '10.2.0',
+            'typo3' => '10.3.0',
+            'info' => '10.3.0',
         ],
         'conflicts' => [],
         'suggests' => [
diff --git a/typo3/sysext/lowlevel/composer.json b/typo3/sysext/lowlevel/composer.json
index b7f385e8bbfe57418cf08171d99a1e3bcf07c5f1..b06f718ddc886e55b1a047f23f7f68250c73a851 100644
--- a/typo3/sysext/lowlevel/composer.json
+++ b/typo3/sysext/lowlevel/composer.json
@@ -13,14 +13,14 @@
 		"sort-packages": true
 	},
 	"require": {
-		"typo3/cms-core": "10.2.0"
+		"typo3/cms-core": "10.3.*@dev"
 	},
 	"conflict": {
 		"typo3/cms": "*"
 	},
 	"extra": {
 		"branch-alias": {
-			"dev-master": "10.2.x-dev"
+			"dev-master": "10.3.x-dev"
 		},
 		"typo3/cms": {
 			"Package": {
diff --git a/typo3/sysext/lowlevel/ext_emconf.php b/typo3/sysext/lowlevel/ext_emconf.php
index 0fad3e2381bb87717676143e741712a3f425a84b..ff5fca3ca8141972fa9f11a421d6db62d9b1fe38 100644
--- a/typo3/sysext/lowlevel/ext_emconf.php
+++ b/typo3/sysext/lowlevel/ext_emconf.php
@@ -8,10 +8,10 @@ $EM_CONF[$_EXTKEY] = [
     'author' => 'TYPO3 Core Team',
     'author_email' => 'typo3cms@typo3.org',
     'author_company' => '',
-    'version' => '10.2.0',
+    'version' => '10.3.0',
     'constraints' => [
         'depends' => [
-            'typo3' => '10.2.0',
+            'typo3' => '10.3.0',
         ],
         'conflicts' => [],
         'suggests' => [],
diff --git a/typo3/sysext/opendocs/composer.json b/typo3/sysext/opendocs/composer.json
index 761ecd63cfa0d7b9d38a7a570e4669debf9587e9..3542e810296e99ac61aa3d613fb3c6706a140906 100644
--- a/typo3/sysext/opendocs/composer.json
+++ b/typo3/sysext/opendocs/composer.json
@@ -13,14 +13,14 @@
 		"sort-packages": true
 	},
 	"require": {
-		"typo3/cms-core": "10.2.0"
+		"typo3/cms-core": "10.3.*@dev"
 	},
 	"conflict": {
 		"typo3/cms": "*"
 	},
 	"extra": {
 		"branch-alias": {
-			"dev-master": "10.2.x-dev"
+			"dev-master": "10.3.x-dev"
 		},
 		"typo3/cms": {
 			"extension-key": "opendocs"
diff --git a/typo3/sysext/opendocs/ext_emconf.php b/typo3/sysext/opendocs/ext_emconf.php
index c0edfd88a5ea294224ac1ff5929976dd29a5023c..5365301c8329762f1440f3f0f6f627ae2a88db40 100644
--- a/typo3/sysext/opendocs/ext_emconf.php
+++ b/typo3/sysext/opendocs/ext_emconf.php
@@ -8,10 +8,10 @@ $EM_CONF[$_EXTKEY] = [
     'author' => 'TYPO3 Core Team',
     'author_email' => 'typo3cms@typo3.org',
     'author_company' => '',
-    'version' => '10.2.0',
+    'version' => '10.3.0',
     'constraints' => [
         'depends' => [
-            'typo3' => '10.2.0',
+            'typo3' => '10.3.0',
         ],
         'conflicts' => [],
         'suggests' => [],
diff --git a/typo3/sysext/recordlist/composer.json b/typo3/sysext/recordlist/composer.json
index 44b7514c9e628e11ca18e35ec0a43a9e8e1ce540..e13af0c7d4210a067dfc5207ab762f5853a41d5a 100644
--- a/typo3/sysext/recordlist/composer.json
+++ b/typo3/sysext/recordlist/composer.json
@@ -13,14 +13,14 @@
 		"sort-packages": true
 	},
 	"require": {
-		"typo3/cms-core": "10.2.0"
+		"typo3/cms-core": "10.3.*@dev"
 	},
 	"conflict": {
 		"typo3/cms": "*"
 	},
 	"extra": {
 		"branch-alias": {
-			"dev-master": "10.2.x-dev"
+			"dev-master": "10.3.x-dev"
 		},
 		"typo3/cms": {
 			"Package": {
diff --git a/typo3/sysext/recordlist/ext_emconf.php b/typo3/sysext/recordlist/ext_emconf.php
index 1b4090e92bcbeadd5852f2960cdba29798dcecdf..5db461d9606006010aae97942fa303295f9555d7 100644
--- a/typo3/sysext/recordlist/ext_emconf.php
+++ b/typo3/sysext/recordlist/ext_emconf.php
@@ -8,10 +8,10 @@ $EM_CONF[$_EXTKEY] = [
     'author' => 'TYPO3 Core Team',
     'author_email' => 'typo3cms@typo3.org',
     'author_company' => '',
-    'version' => '10.2.0',
+    'version' => '10.3.0',
     'constraints' => [
         'depends' => [
-            'typo3' => '10.2.0',
+            'typo3' => '10.3.0',
         ],
         'conflicts' => [],
         'suggests' => [],
diff --git a/typo3/sysext/recycler/composer.json b/typo3/sysext/recycler/composer.json
index b2e8eb9ff1c9f659ac7c057e6197a5a7066a3ee9..3ab10e6b9a90893bc1d8cedf65d4bfbc413d1ebb 100644
--- a/typo3/sysext/recycler/composer.json
+++ b/typo3/sysext/recycler/composer.json
@@ -13,7 +13,7 @@
 		"sort-packages": true
 	},
 	"require": {
-		"typo3/cms-core": "10.2.0"
+		"typo3/cms-core": "10.3.*@dev"
 	},
 	"suggest": {
 		"typo3/cms-scheduler": "Remove deleted records after given time"
@@ -23,7 +23,7 @@
 	},
 	"extra": {
 		"branch-alias": {
-			"dev-master": "10.2.x-dev"
+			"dev-master": "10.3.x-dev"
 		},
 		"typo3/cms": {
 			"extension-key": "recycler"
diff --git a/typo3/sysext/recycler/ext_emconf.php b/typo3/sysext/recycler/ext_emconf.php
index a341a8f271bf6af1eaf244d5e70cbcd097a88c72..552b438b9ecb77bcec6c44224dad61e09143ab2c 100644
--- a/typo3/sysext/recycler/ext_emconf.php
+++ b/typo3/sysext/recycler/ext_emconf.php
@@ -8,10 +8,10 @@ $EM_CONF[$_EXTKEY] = [
     'state' => 'stable',
     'clearCacheOnLoad' => 0,
     'author_company' => '',
-    'version' => '10.2.0',
+    'version' => '10.3.0',
     'constraints' => [
         'depends' => [
-            'typo3' => '10.2.0',
+            'typo3' => '10.3.0',
         ],
         'conflicts' => [],
         'suggests' => [
diff --git a/typo3/sysext/redirects/composer.json b/typo3/sysext/redirects/composer.json
index 6b5055d3cbdeae21399c4550e8344873d178c388..5c57d24f2154a826a7ecbf02d48b84c3ad6c4d7c 100644
--- a/typo3/sysext/redirects/composer.json
+++ b/typo3/sysext/redirects/composer.json
@@ -16,8 +16,8 @@
 		"doctrine/dbal": "^2.10",
 		"psr/http-message": "^1.0",
 		"psr/log": "^1.0",
-		"typo3/cms-backend": "10.2.0",
-		"typo3/cms-core": "10.2.0",
+		"typo3/cms-backend": "10.3.*@dev",
+		"typo3/cms-core": "10.3.*@dev",
 		"typo3fluid/fluid": "^2.6.8"
 	},
 	"conflict": {
@@ -29,7 +29,7 @@
 	},
 	"extra": {
 		"branch-alias": {
-			"dev-master": "10.2.x-dev"
+			"dev-master": "10.3.x-dev"
 		},
 		"typo3/cms": {
 			"extension-key": "redirects",
diff --git a/typo3/sysext/redirects/ext_emconf.php b/typo3/sysext/redirects/ext_emconf.php
index 7101cdf3f6d7c6f4c842bb2a5855f11f4bddc1a0..3b3372a110983504097875c7d8b2098e3daec064 100644
--- a/typo3/sysext/redirects/ext_emconf.php
+++ b/typo3/sysext/redirects/ext_emconf.php
@@ -8,10 +8,10 @@ $EM_CONF[$_EXTKEY] = [
     'author_company' => '',
     'state' => 'stable',
     'clearCacheOnLoad' => 0,
-    'version' => '10.2.0',
+    'version' => '10.3.0',
     'constraints' => [
         'depends' => [
-            'typo3' => '10.2.0'
+            'typo3' => '10.3.0'
         ],
         'conflicts' => [],
         'suggests' => [
diff --git a/typo3/sysext/reports/composer.json b/typo3/sysext/reports/composer.json
index 2a321c57dbc76752f7b5c95035f688817c83c001..f99d13c69b86cd3228837301ffaef9c2cd4b7820 100644
--- a/typo3/sysext/reports/composer.json
+++ b/typo3/sysext/reports/composer.json
@@ -13,7 +13,7 @@
 		"sort-packages": true
 	},
 	"require": {
-		"typo3/cms-core": "10.2.0"
+		"typo3/cms-core": "10.3.*@dev"
 	},
 	"suggest": {
 		"typo3/cms-scheduler": "Determine system's status and send it via email"
@@ -23,7 +23,7 @@
 	},
 	"extra": {
 		"branch-alias": {
-			"dev-master": "10.2.x-dev"
+			"dev-master": "10.3.x-dev"
 		},
 		"typo3/cms": {
 			"Package": {
diff --git a/typo3/sysext/reports/ext_emconf.php b/typo3/sysext/reports/ext_emconf.php
index 9c92c3ed2477877ee3c5958bd730acaf97116239..76f593187673d313e4078a1b833e7dd93f9ae796 100644
--- a/typo3/sysext/reports/ext_emconf.php
+++ b/typo3/sysext/reports/ext_emconf.php
@@ -8,10 +8,10 @@ $EM_CONF[$_EXTKEY] = [
     'author_company' => '',
     'state' => 'stable',
     'clearCacheOnLoad' => 0,
-    'version' => '10.2.0',
+    'version' => '10.3.0',
     'constraints' => [
         'depends' => [
-            'typo3' => '10.2.0',
+            'typo3' => '10.3.0',
         ],
         'conflicts' => [],
         'suggests' => [
diff --git a/typo3/sysext/rte_ckeditor/composer.json b/typo3/sysext/rte_ckeditor/composer.json
index 403075637dd7e53548b60e3a383cc5d561236c20..87564e232602a7a8eccce58b7fb113a39d6ed73f 100644
--- a/typo3/sysext/rte_ckeditor/composer.json
+++ b/typo3/sysext/rte_ckeditor/composer.json
@@ -13,7 +13,7 @@
 		"sort-packages": true
 	},
 	"require": {
-		"typo3/cms-core": "10.2.0"
+		"typo3/cms-core": "10.3.*@dev"
 	},
 	"conflict": {
 		"typo3/cms": "*"
@@ -23,7 +23,7 @@
 	},
 	"extra": {
 		"branch-alias": {
-			"dev-master": "10.2.x-dev"
+			"dev-master": "10.3.x-dev"
 		},
 		"typo3/cms": {
 			"Package": {
diff --git a/typo3/sysext/rte_ckeditor/ext_emconf.php b/typo3/sysext/rte_ckeditor/ext_emconf.php
index c1c76f43e47bc24dca9a5400d9dcacb65019dfdc..73321d1200a6833622e4e5ce5957bf6fb7f482fe 100644
--- a/typo3/sysext/rte_ckeditor/ext_emconf.php
+++ b/typo3/sysext/rte_ckeditor/ext_emconf.php
@@ -7,14 +7,14 @@ $EM_CONF[$_EXTKEY] = [
     'clearCacheOnLoad' => 0,
     'author' => 'TYPO3 Core Team',
     'author_email' => 'typo3cms@typo3.org',
-    'version' => '10.2.0',
+    'version' => '10.3.0',
     'constraints' => [
         'depends' => [
-            'typo3' => '10.2.0',
+            'typo3' => '10.3.0',
         ],
         'conflicts' => [],
         'suggests' => [
-            'setup' => '10.2.0',
+            'setup' => '10.3.0',
         ],
     ],
 ];
diff --git a/typo3/sysext/scheduler/composer.json b/typo3/sysext/scheduler/composer.json
index aacf415dd5876ec17d67b3867d0239d200898aab..b95136b2de5d7d8056e4bff75c840e7c4fc5d16b 100644
--- a/typo3/sysext/scheduler/composer.json
+++ b/typo3/sysext/scheduler/composer.json
@@ -13,14 +13,14 @@
 		"sort-packages": true
 	},
 	"require": {
-		"typo3/cms-core": "10.2.0"
+		"typo3/cms-core": "10.3.*@dev"
 	},
 	"conflict": {
 		"typo3/cms": "*"
 	},
 	"extra": {
 		"branch-alias": {
-			"dev-master": "10.2.x-dev"
+			"dev-master": "10.3.x-dev"
 		},
 		"typo3/cms": {
 			"extension-key": "scheduler"
diff --git a/typo3/sysext/scheduler/ext_emconf.php b/typo3/sysext/scheduler/ext_emconf.php
index 808f8f1351161ff6a747bbae8d5e235d041844fa..42bb242bf4fd06e890ac8e6728afbdbbcbf7404d 100644
--- a/typo3/sysext/scheduler/ext_emconf.php
+++ b/typo3/sysext/scheduler/ext_emconf.php
@@ -3,7 +3,7 @@ $EM_CONF[$_EXTKEY] = [
     'title' => 'Scheduler',
     'description' => 'The TYPO3 Scheduler let\'s you register tasks to happen at a specific time',
     'category' => 'misc',
-    'version' => '10.2.0',
+    'version' => '10.3.0',
     'state' => 'stable',
     'clearCacheOnLoad' => 0,
     'author' => 'TYPO3 Core Team',
@@ -11,7 +11,7 @@ $EM_CONF[$_EXTKEY] = [
     'author_company' => '',
     'constraints' => [
         'depends' => [
-            'typo3' => '10.2.0',
+            'typo3' => '10.3.0',
         ],
         'conflicts' => [],
         'suggests' => [],
diff --git a/typo3/sysext/seo/composer.json b/typo3/sysext/seo/composer.json
index 77e9096aff1db534da026430a9f477ae77917228..7355846b3f2e1edacbb34291e37aaae86808395e 100644
--- a/typo3/sysext/seo/composer.json
+++ b/typo3/sysext/seo/composer.json
@@ -13,16 +13,16 @@
 		"sort-packages": true
 	},
 	"require": {
-		"typo3/cms-core": "10.2.0",
-		"typo3/cms-frontend": "10.2.0",
-		"typo3/cms-extbase": "10.2.0"
+		"typo3/cms-core": "10.3.*@dev",
+		"typo3/cms-frontend": "10.3.*@dev",
+		"typo3/cms-extbase": "10.3.*@dev"
 	},
 	"conflict": {
 		"typo3/cms": "*"
 	},
 	"extra": {
 		"branch-alias": {
-			"dev-master": "10.2.x-dev"
+			"dev-master": "10.3.x-dev"
 		},
 		"typo3/cms": {
 			"extension-key": "seo",
diff --git a/typo3/sysext/seo/ext_emconf.php b/typo3/sysext/seo/ext_emconf.php
index 09a8e42f51391f0e02e577d127a083e9953921b1..80ad9e2fc0c52a8b69704f59e689f9a604c5df5d 100644
--- a/typo3/sysext/seo/ext_emconf.php
+++ b/typo3/sysext/seo/ext_emconf.php
@@ -8,10 +8,10 @@ $EM_CONF[$_EXTKEY] = [
     'author_company' => '',
     'state' => 'stable',
     'clearCacheOnLoad' => 0,
-    'version' => '10.2.0',
+    'version' => '10.3.0',
     'constraints' => [
         'depends' => [
-            'typo3' => '10.2.0'
+            'typo3' => '10.3.0'
         ],
         'conflicts' => [],
         'suggests' => [],
diff --git a/typo3/sysext/setup/composer.json b/typo3/sysext/setup/composer.json
index 2498faee468eeba7e53ac57dc456adf5e5faf923..52530d77fd1933bbdef61d0fa5c78b83d93cc275 100644
--- a/typo3/sysext/setup/composer.json
+++ b/typo3/sysext/setup/composer.json
@@ -13,14 +13,14 @@
 		"sort-packages": true
 	},
 	"require": {
-		"typo3/cms-core": "10.2.0"
+		"typo3/cms-core": "10.3.*@dev"
 	},
 	"conflict": {
 		"typo3/cms": "*"
 	},
 	"extra": {
 		"branch-alias": {
-			"dev-master": "10.2.x-dev"
+			"dev-master": "10.3.x-dev"
 		},
 		"typo3/cms": {
 			"Package": {
diff --git a/typo3/sysext/setup/ext_emconf.php b/typo3/sysext/setup/ext_emconf.php
index b07375e8e6a8c6fe22135b5b1d40200309740959..6dd7339d60b0fd8af0acf5e00c6d662d4605cfb0 100644
--- a/typo3/sysext/setup/ext_emconf.php
+++ b/typo3/sysext/setup/ext_emconf.php
@@ -8,10 +8,10 @@ $EM_CONF[$_EXTKEY] = [
     'author' => 'TYPO3 Core Team',
     'author_email' => 'typo3cms@typo3.org',
     'author_company' => '',
-    'version' => '10.2.0',
+    'version' => '10.3.0',
     'constraints' => [
         'depends' => [
-            'typo3' => '10.2.0',
+            'typo3' => '10.3.0',
         ],
         'conflicts' => [],
         'suggests' => [],
diff --git a/typo3/sysext/sys_note/composer.json b/typo3/sysext/sys_note/composer.json
index 3f084b875df6d2eb7f8efce5871954c9ad54a060..3e0ed4a88b46aaa69d74b684fa30326146276b5c 100644
--- a/typo3/sysext/sys_note/composer.json
+++ b/typo3/sysext/sys_note/composer.json
@@ -13,14 +13,14 @@
 		"sort-packages": true
 	},
 	"require": {
-		"typo3/cms-core": "10.2.0"
+		"typo3/cms-core": "10.3.*@dev"
 	},
 	"conflict": {
 		"typo3/cms": "*"
 	},
 	"extra": {
 		"branch-alias": {
-			"dev-master": "10.2.x-dev"
+			"dev-master": "10.3.x-dev"
 		},
 		"typo3/cms": {
 			"Package": {
diff --git a/typo3/sysext/sys_note/ext_emconf.php b/typo3/sysext/sys_note/ext_emconf.php
index abb32d97e390ce3df6e647e672553288cb5887fe..3ebea68e2ef6be6bc54b8f4c458e2923b493a1d3 100644
--- a/typo3/sysext/sys_note/ext_emconf.php
+++ b/typo3/sysext/sys_note/ext_emconf.php
@@ -8,10 +8,10 @@ $EM_CONF[$_EXTKEY] = [
     'author' => 'TYPO3 Core Team',
     'author_email' => 'typo3cms@typo3.org',
     'author_company' => '',
-    'version' => '10.2.0',
+    'version' => '10.3.0',
     'constraints' => [
         'depends' => [
-            'typo3' => '10.2.0',
+            'typo3' => '10.3.0',
         ],
         'conflicts' => [],
         'suggests' => [],
diff --git a/typo3/sysext/t3editor/composer.json b/typo3/sysext/t3editor/composer.json
index 94f17b30eb0a8a827ff9064f69f2feff08c8d70d..99ea3f917d44ca9862a3f88c09ce8551d44ad4eb 100644
--- a/typo3/sysext/t3editor/composer.json
+++ b/typo3/sysext/t3editor/composer.json
@@ -13,14 +13,14 @@
 		"sort-packages": true
 	},
 	"require": {
-		"typo3/cms-core": "10.2.0"
+		"typo3/cms-core": "10.3.*@dev"
 	},
 	"conflict": {
 		"typo3/cms": "*"
 	},
 	"extra": {
 		"branch-alias": {
-			"dev-master": "10.2.x-dev"
+			"dev-master": "10.3.x-dev"
 		},
 		"typo3/cms": {
 			"Package": {
diff --git a/typo3/sysext/t3editor/ext_emconf.php b/typo3/sysext/t3editor/ext_emconf.php
index b3482838611dc843862711d22ff91829fdca86a9..0620f8428546c1568e0a1686b97079a64cb4be11 100644
--- a/typo3/sysext/t3editor/ext_emconf.php
+++ b/typo3/sysext/t3editor/ext_emconf.php
@@ -8,10 +8,10 @@ $EM_CONF[$_EXTKEY] = [
     'author' => 'TYPO3 Core Team',
     'author_email' => 'typo3cms@typo3.org',
     'author_company' => '',
-    'version' => '10.2.0',
+    'version' => '10.3.0',
     'constraints' => [
         'depends' => [
-            'typo3' => '10.2.0',
+            'typo3' => '10.3.0',
         ],
         'conflicts' => [],
         'suggests' => [],
diff --git a/typo3/sysext/tstemplate/composer.json b/typo3/sysext/tstemplate/composer.json
index 53551d645bc500f7d89d00e0194809eddbeb31df..24e307cd1ab6cbb43a43ec8268d1f9ba63c96e72 100644
--- a/typo3/sysext/tstemplate/composer.json
+++ b/typo3/sysext/tstemplate/composer.json
@@ -13,14 +13,14 @@
 		"sort-packages": true
 	},
 	"require": {
-		"typo3/cms-core": "10.2.0"
+		"typo3/cms-core": "10.3.*@dev"
 	},
 	"conflict": {
 		"typo3/cms": "*"
 	},
 	"extra": {
 		"branch-alias": {
-			"dev-master": "10.2.x-dev"
+			"dev-master": "10.3.x-dev"
 		},
 		"typo3/cms": {
 			"Package": {
diff --git a/typo3/sysext/tstemplate/ext_emconf.php b/typo3/sysext/tstemplate/ext_emconf.php
index 504c187dee2948e866bb50b2eda8957e707a2a5e..45de9b24789bba4d7edb52bb8300ff0dfd01b727 100644
--- a/typo3/sysext/tstemplate/ext_emconf.php
+++ b/typo3/sysext/tstemplate/ext_emconf.php
@@ -8,10 +8,10 @@ $EM_CONF[$_EXTKEY] = [
     'author' => 'TYPO3 Core Team',
     'author_email' => 'typo3cms@typo3.org',
     'author_company' => '',
-    'version' => '10.2.0',
+    'version' => '10.3.0',
     'constraints' => [
         'depends' => [
-            'typo3' => '10.2.0',
+            'typo3' => '10.3.0',
         ],
         'conflicts' => [],
         'suggests' => [],
diff --git a/typo3/sysext/viewpage/composer.json b/typo3/sysext/viewpage/composer.json
index 59f1d51c1b85c578f0e89c337c0906782f80a87f..65dd36090b189deb0882a30427a702c063f41343 100644
--- a/typo3/sysext/viewpage/composer.json
+++ b/typo3/sysext/viewpage/composer.json
@@ -13,14 +13,14 @@
 		"sort-packages": true
 	},
 	"require": {
-		"typo3/cms-core": "10.2.0"
+		"typo3/cms-core": "10.3.*@dev"
 	},
 	"conflict": {
 		"typo3/cms": "*"
 	},
 	"extra": {
 		"branch-alias": {
-			"dev-master": "10.2.x-dev"
+			"dev-master": "10.3.x-dev"
 		},
 		"typo3/cms": {
 			"Package": {
diff --git a/typo3/sysext/viewpage/ext_emconf.php b/typo3/sysext/viewpage/ext_emconf.php
index 9e05c252d70ad421bf517a57afda1ccdb082ab9b..3d9abfe1b3148b55c586cb112e406ed48fcc0ace 100644
--- a/typo3/sysext/viewpage/ext_emconf.php
+++ b/typo3/sysext/viewpage/ext_emconf.php
@@ -8,10 +8,10 @@ $EM_CONF[$_EXTKEY] = [
     'author' => 'TYPO3 Core Team',
     'author_email' => 'typo3cms@typo3.org',
     'author_company' => '',
-    'version' => '10.2.0',
+    'version' => '10.3.0',
     'constraints' => [
         'depends' => [
-            'typo3' => '10.2.0',
+            'typo3' => '10.3.0',
         ],
         'conflicts' => [],
         'suggests' => [],
diff --git a/typo3/sysext/workspaces/composer.json b/typo3/sysext/workspaces/composer.json
index 009be55933c17aa4b2b38d2e32ccdd27a5f10e6b..8938f942979113b71f5f8a732b9ab8bcfe4bee51 100644
--- a/typo3/sysext/workspaces/composer.json
+++ b/typo3/sysext/workspaces/composer.json
@@ -13,7 +13,7 @@
 		"sort-packages": true
 	},
 	"require": {
-		"typo3/cms-core": "10.2.0"
+		"typo3/cms-core": "10.3.*@dev"
 	},
 	"conflict": {
 		"typo3/cms": "*"
@@ -23,7 +23,7 @@
 	},
 	"extra": {
 		"branch-alias": {
-			"dev-master": "10.2.x-dev"
+			"dev-master": "10.3.x-dev"
 		},
 		"typo3/cms": {
 			"extension-key": "workspaces"
diff --git a/typo3/sysext/workspaces/ext_emconf.php b/typo3/sysext/workspaces/ext_emconf.php
index abcf2d684bf66b6034b0c2bc2af14100b33a0844..bac8bd3e8cf76b0aa8123818d19d05165bf2a19f 100644
--- a/typo3/sysext/workspaces/ext_emconf.php
+++ b/typo3/sysext/workspaces/ext_emconf.php
@@ -8,10 +8,10 @@ $EM_CONF[$_EXTKEY] = [
     'author_company' => '',
     'state' => 'stable',
     'clearCacheOnLoad' => 1,
-    'version' => '10.2.0',
+    'version' => '10.3.0',
     'constraints' => [
         'depends' => [
-            'typo3' => '10.2.0'
+            'typo3' => '10.3.0'
         ],
         'conflicts' => [],
         'suggests' => [],