diff --git a/composer.json b/composer.json
index 86b6c85e0462b09b5ab580c2a1c025a45c492fef..5467d641de4fdf138e0040cd74beadf1587cc65d 100644
--- a/composer.json
+++ b/composer.json
@@ -68,9 +68,6 @@
         }
     },
     "extra": {
-        "branch-alias": {
-          "dev-11.x": "10.2.x-dev"
-        },
         "_readme": [
             "By default Drupal loads the autoloader from ./vendor/autoload.php.",
             "To change the autoloader you can edit ./autoload.php.",
diff --git a/composer.lock b/composer.lock
index fffd58081c5f54b4f5fe68a22d8e3b53b7410e39..20e28998f121af90134af0dab599e66f49708a36 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": "1023c262eb294df10ca4ff80c6d3ceb6",
+    "content-hash": "f3f72146ac9ba2de4360c6b6ba23518b",
     "packages": [
         {
             "name": "asm89/stack-cors",
@@ -495,7 +495,7 @@
             "dist": {
                 "type": "path",
                 "url": "core",
-                "reference": "4c5eafca7cdc5f796a213a6722415c7f371731ef"
+                "reference": "d8c2e380c13d2892038560c5591ef07ac31c6add"
             },
             "require": {
                 "asm89/stack-cors": "^2.1",
@@ -573,9 +573,6 @@
             },
             "type": "drupal-core",
             "extra": {
-                "branch-alias": {
-                    "dev-11.x": "10.2.x-dev"
-                },
                 "drupal-scaffold": {
                     "file-mapping": {
                         "[project-root]/.editorconfig": "assets/scaffold/files/editorconfig",
diff --git a/composer/Metapackage/CoreRecommended/composer.json b/composer/Metapackage/CoreRecommended/composer.json
index 8a4d9c78e9c42b50226413e126c1bd1695e7bd3f..11ffb36424307b2fef66fd9de8f07860fae3ec47 100644
--- a/composer/Metapackage/CoreRecommended/composer.json
+++ b/composer/Metapackage/CoreRecommended/composer.json
@@ -7,7 +7,7 @@
         "webflo/drupal-core-strict": "*"
     },
     "require": {
-        "drupal/core": "10.2.x-dev",
+        "drupal/core": "11.x-dev",
         "asm89/stack-cors": "~v2.1.1",
         "composer/semver": "~3.3.2",
         "doctrine/annotations": "~1.14.3",
diff --git a/composer/Metapackage/PinnedDevDependencies/composer.json b/composer/Metapackage/PinnedDevDependencies/composer.json
index e2b9a4dbfff26017a09c348c5695f6dd8e99d612..902adf15fce6ae4e0f523a23459b38a7e8a4f1ff 100644
--- a/composer/Metapackage/PinnedDevDependencies/composer.json
+++ b/composer/Metapackage/PinnedDevDependencies/composer.json
@@ -7,7 +7,7 @@
         "webflo/drupal-core-require-dev": "*"
     },
     "require": {
-        "drupal/core": "10.2.x-dev",
+        "drupal/core": "11.x-dev",
         "behat/mink": "v1.10.0",
         "behat/mink-browserkit-driver": "v2.1.0",
         "behat/mink-selenium2-driver": "v1.6.0",
diff --git a/composer/Template/LegacyProject/composer.json b/composer/Template/LegacyProject/composer.json
index a8fceccd0dd25590ff8cd74889af97fb1b6d142b..204d1dcba1eb6ec152f3efdd116de2e9f579bdc8 100644
--- a/composer/Template/LegacyProject/composer.json
+++ b/composer/Template/LegacyProject/composer.json
@@ -16,13 +16,13 @@
     ],
     "require": {
         "composer/installers": "^2.0",
-        "drupal/core-composer-scaffold": "^10.2",
-        "drupal/core-project-message": "^10.2",
-        "drupal/core-recommended": "^10.2",
-        "drupal/core-vendor-hardening": "^10.2"
+        "drupal/core-composer-scaffold": "^11",
+        "drupal/core-project-message": "^11",
+        "drupal/core-recommended": "^11",
+        "drupal/core-vendor-hardening": "^11"
     },
     "require-dev": {
-        "drupal/core-dev": "^10.2"
+        "drupal/core-dev": "^11"
     },
     "conflict": {
         "drupal/drupal": "*"
diff --git a/composer/Template/RecommendedProject/composer.json b/composer/Template/RecommendedProject/composer.json
index 56d98de870fd8497c08158fe5339ac3cb470288b..0b4926dabfda9080ceb2d992ffbaca187398ff0d 100644
--- a/composer/Template/RecommendedProject/composer.json
+++ b/composer/Template/RecommendedProject/composer.json
@@ -16,12 +16,12 @@
     ],
     "require": {
         "composer/installers": "^2.0",
-        "drupal/core-composer-scaffold": "^10.2",
-        "drupal/core-project-message": "^10.2",
-        "drupal/core-recommended": "^10.2"
+        "drupal/core-composer-scaffold": "^11",
+        "drupal/core-project-message": "^11",
+        "drupal/core-recommended": "^11"
     },
     "require-dev": {
-        "drupal/core-dev": "^10.2"
+        "drupal/core-dev": "^11"
     },
     "conflict": {
         "drupal/drupal": "*"
diff --git a/core/composer.json b/core/composer.json
index c38277c62f358c945e5b3678c42898fdfd3e0006..47cf2763b385e3ed9099aeb4c800ea630bf50ca4 100644
--- a/core/composer.json
+++ b/core/composer.json
@@ -115,9 +115,6 @@
         "ext-zip": "Needed to extend the plugin.manager.archiver service capability with the handling of files in the ZIP format."
     },
     "extra": {
-        "branch-alias": {
-          "dev-11.x": "10.2.x-dev"
-        },
         "drupal-scaffold": {
             "file-mapping": {
                 "[project-root]/.editorconfig": "assets/scaffold/files/editorconfig",
diff --git a/core/lib/Drupal.php b/core/lib/Drupal.php
index 33b94192a2b4b6ce29fc4092aaff035e844fc989..cb51a509fcee11f38c18047f3a5b20707ab5d1e3 100644
--- a/core/lib/Drupal.php
+++ b/core/lib/Drupal.php
@@ -75,7 +75,7 @@ class Drupal {
   /**
    * The current system version.
    */
-  const VERSION = '10.2.0-dev';
+  const VERSION = '11.0-dev';
 
   /**
    * Core API compatibility.
diff --git a/core/lib/Drupal/Component/Annotation/composer.json b/core/lib/Drupal/Component/Annotation/composer.json
index a755e8f048675147af091601089c74e521f38ecf..feabe9279fe0817c209302935537cd5afa3f8898 100644
--- a/core/lib/Drupal/Component/Annotation/composer.json
+++ b/core/lib/Drupal/Component/Annotation/composer.json
@@ -9,9 +9,9 @@
     "require": {
         "php": ">=8.1.0",
         "doctrine/annotations": "^1.14",
-        "drupal/core-file-cache": "10.2.x-dev",
-        "drupal/core-plugin": "10.2.x-dev",
-        "drupal/core-utility": "10.2.x-dev"
+        "drupal/core-file-cache": "11.x-dev",
+        "drupal/core-plugin": "11.x-dev",
+        "drupal/core-utility": "11.x-dev"
     },
     "autoload": {
         "psr-4": {
diff --git a/core/lib/Drupal/Component/Datetime/composer.json b/core/lib/Drupal/Component/Datetime/composer.json
index 7a16ab9e344f7f0cc2dc7141653a47b87f66e325..91bd608f5570c559da95bee80c2aa924234caaa8 100644
--- a/core/lib/Drupal/Component/Datetime/composer.json
+++ b/core/lib/Drupal/Component/Datetime/composer.json
@@ -8,7 +8,7 @@
     "license": "GPL-2.0-or-later",
     "require": {
         "php": ">=8.1.0",
-        "drupal/core-utility": "10.2.x-dev"
+        "drupal/core-utility": "11.x-dev"
     },
     "autoload": {
         "psr-4": {
diff --git a/core/lib/Drupal/Component/Discovery/composer.json b/core/lib/Drupal/Component/Discovery/composer.json
index c0800a842b7c169009507706838701ccc59f9985..4a9343967682b60fc6e33c276d411a1f80a6c365 100644
--- a/core/lib/Drupal/Component/Discovery/composer.json
+++ b/core/lib/Drupal/Component/Discovery/composer.json
@@ -8,8 +8,8 @@
     "license": "GPL-2.0-or-later",
     "require": {
         "php": ">=8.1.0",
-        "drupal/core-file-cache": "10.2.x-dev",
-        "drupal/core-serialization": "10.2.x-dev"
+        "drupal/core-file-cache": "11.x-dev",
+        "drupal/core-serialization": "11.x-dev"
     },
     "autoload": {
         "psr-4": {
diff --git a/core/lib/Drupal/Component/FrontMatter/composer.json b/core/lib/Drupal/Component/FrontMatter/composer.json
index ac246ae49b1570ae70cf22a6eb881260fae04bea..9baa12c9d92d3c36b822103d0b4858281b873d51 100644
--- a/core/lib/Drupal/Component/FrontMatter/composer.json
+++ b/core/lib/Drupal/Component/FrontMatter/composer.json
@@ -8,7 +8,7 @@
     "license": "GPL-2.0-or-later",
     "require": {
         "php": ">=8.1.0",
-        "drupal/core-serialization": "10.2.x-dev"
+        "drupal/core-serialization": "11.x-dev"
     },
     "autoload": {
         "psr-4": {
diff --git a/core/lib/Drupal/Component/Gettext/composer.json b/core/lib/Drupal/Component/Gettext/composer.json
index 8893295f5fb00a6a3d60cb2c975e9c188020aa4b..0db3a4bc30b6db7ee1c4411bbd75614ab08f5f4d 100644
--- a/core/lib/Drupal/Component/Gettext/composer.json
+++ b/core/lib/Drupal/Component/Gettext/composer.json
@@ -9,7 +9,7 @@
     },
     "require": {
         "php": ">=8.1.0",
-        "drupal/core-render": "10.2.x-dev"
+        "drupal/core-render": "11.x-dev"
     },
     "autoload": {
         "psr-4": {
diff --git a/core/lib/Drupal/Component/PhpStorage/composer.json b/core/lib/Drupal/Component/PhpStorage/composer.json
index 29466cafd95ca577eaa8f4abd069b221e047d930..0517f06b0e35c65a610a043656a3c89ec3130299 100644
--- a/core/lib/Drupal/Component/PhpStorage/composer.json
+++ b/core/lib/Drupal/Component/PhpStorage/composer.json
@@ -8,7 +8,7 @@
     "license": "GPL-2.0-or-later",
     "require": {
         "php": ">=8.1.0",
-        "drupal/core-file-security": "10.2.x-dev"
+        "drupal/core-file-security": "11.x-dev"
     },
     "autoload": {
         "psr-4": {
diff --git a/core/lib/Drupal/Component/Render/composer.json b/core/lib/Drupal/Component/Render/composer.json
index fd01afa0b255d2ece199d543df4b0ddbacdda904..338eb5135b2b8798493ed4c551ef5d4a8963d00e 100644
--- a/core/lib/Drupal/Component/Render/composer.json
+++ b/core/lib/Drupal/Component/Render/composer.json
@@ -8,7 +8,7 @@
     "license": "GPL-2.0-or-later",
     "require": {
         "php": ">=8.1.0",
-        "drupal/core-utility": "10.2.x-dev"
+        "drupal/core-utility": "11.x-dev"
     },
     "autoload": {
         "psr-4": {