diff --git a/.github/workflows/ci-release.yml b/.github/workflows/ci-release.yml
deleted file mode 100644
index b9c6da9f..00000000
--- a/.github/workflows/ci-release.yml
+++ /dev/null
@@ -1,41 +0,0 @@
-name: Spring Cloud CI Job (Commercial Release Branch)
-
-on:
-  workflow_dispatch:
-    inputs:
-      branches:
-        description: "Which branch should be built (can be a comma-separated list of branches)"
-        required: true
-        default: 'release/5.1.0-M1'
-        type: string
-  push:
-    branches:
-      - release/5.1.0-M1
-
-permissions:
-  actions: write
-  contents: read
-
-jobs:
-  deploy:
-    uses: spring-cloud/spring-cloud-github-actions/.github/workflows/deploy.yml@b6a6b1963b8762420526591c3d363bd7d09e7d4b # v1.1.1
-    with:
-      branches: ${{ inputs.branches }}
-      # Commercial Artifactory only serves runners in the spring-enterprise-builds
-      # group and refuses anything else with a 403, before authentication is even
-      # attempted. This branch resolves its dependencies from there, so a
-      # GitHub-hosted runner will fail no matter how the credentials are set up.
-      runs_on: ubuntu22-2-8
-      # The branches this workflow builds carry -INTERNAL-SNAPSHOT versions until
-      # release-train-ready stamps the release versions. The antora-component-version
-      # plugin derives the component version by stripping only -SNAPSHOT, producing
-      # e.g. 5.0.3-INTERNAL, which @springio/antora-extensions cannot parse. Building
-      # the docs profile would fail, so it is disabled here.
-      build_docs: false
-    secrets:
-      ARTIFACTORY_USERNAME: ${{ secrets.ARTIFACTORY_USERNAME }}
-      ARTIFACTORY_PASSWORD: ${{ secrets.ARTIFACTORY_PASSWORD }}
-      COMMERCIAL_ARTIFACTORY_USERNAME: ${{ secrets.COMMERCIAL_ARTIFACTORY_USERNAME }}
-      COMMERCIAL_ARTIFACTORY_PASSWORD: ${{ secrets.COMMERCIAL_ARTIFACTORY_PASSWORD }}
-      DOCKERHUB_USERNAME: ${{ secrets.DOCKERHUB_USERNAME }}
-      DOCKERHUB_TOKEN: ${{ secrets.DOCKERHUB_TOKEN }}
diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
deleted file mode 100644
index 3371c65d..00000000
--- a/.github/workflows/ci.yaml
+++ /dev/null
@@ -1,34 +0,0 @@
-name: Spring Cloud Build CI Job
-
-on:
-  workflow_call:
-  push:
-    branches:
-      - main
-      - 4.3.x
-
-  # Scheduled builds run daily at midnight UTC
-  schedule:
-    - cron: '0 0 * * *'
-
-  # Manual trigger with optional branch override
-  workflow_dispatch:
-    inputs:
-      branches:
-        description: "Which branch should be built (can be a comma-separated list of branches)"
-        required: true
-        default: 'main'
-        type: string
-
-jobs:
-  deploy:
-    uses: spring-cloud/spring-cloud-github-actions/.github/workflows/deploy.yml@b6a6b1963b8762420526591c3d363bd7d09e7d4b # v1.1.1
-    with:
-      branches: ${{ inputs.branches }}
-    secrets:
-      ARTIFACTORY_USERNAME: ${{ secrets.ARTIFACTORY_USERNAME }}
-      ARTIFACTORY_PASSWORD: ${{ secrets.ARTIFACTORY_PASSWORD }}
-      COMMERCIAL_ARTIFACTORY_USERNAME: ${{ secrets.COMMERCIAL_ARTIFACTORY_USERNAME }}
-      COMMERCIAL_ARTIFACTORY_PASSWORD: ${{ secrets.COMMERCIAL_ARTIFACTORY_PASSWORD }}
-      DOCKERHUB_USERNAME: ${{ secrets.DOCKERHUB_USERNAME }}
-      DOCKERHUB_TOKEN: ${{ secrets.DOCKERHUB_TOKEN }}
diff --git a/.github/workflows/pr.yml b/.github/workflows/pr.yml
deleted file mode 100644
index 71f11885..00000000
--- a/.github/workflows/pr.yml
+++ /dev/null
@@ -1,9 +0,0 @@
-name: PR
-
-on:
-  pull_request:
-    branches: [ main, 4.3.x ]
-
-jobs:
-  build:
-    uses: spring-cloud/spring-cloud-github-actions/.github/workflows/pr.yml@b6a6b1963b8762420526591c3d363bd7d09e7d4b # v1.1.1
diff --git a/docs/pom.xml b/docs/pom.xml
index 2154b1df..7d4afacc 100644
--- a/docs/pom.xml
+++ b/docs/pom.xml
@@ -10,7 +10,7 @@
 	<parent>
 		<groupId>org.springframework.cloud</groupId>
 		<artifactId>spring-cloud-build</artifactId>
-		<version>5.1.0-INTERNAL-SNAPSHOT</version>
+		<version>5.1.0-M1</version>
 	</parent>
 	<properties>
 		<docs.main>spring-cloud-build</docs.main>
diff --git a/pom.xml b/pom.xml
index 55846786..d2f77e70 100644
--- a/pom.xml
+++ b/pom.xml
@@ -5,7 +5,7 @@
 	<modelVersion>4.0.0</modelVersion>
 	<groupId>org.springframework.cloud</groupId>
 	<artifactId>spring-cloud-build</artifactId>
-	<version>5.1.0-INTERNAL-SNAPSHOT</version>
+	<version>5.1.0-M1</version>
 	<packaging>pom</packaging>
 	<name>Spring Cloud Parent</name>
 	<description>Spring Cloud parent pom, managing plugins and dependencies for Spring
@@ -32,8 +32,8 @@
 		<maven.compiler.target>${java.version}</maven.compiler.target>
 		<main.basedir>${basedir}</main.basedir>
 		<docs.main>${project.artifactId}</docs.main>
-		<spring-boot.version>4.2.0-INTERNAL-SNAPSHOT</spring-boot.version>
-		<spring-cloud-build.version>5.1.0-INTERNAL-SNAPSHOT</spring-cloud-build.version>
+		<spring-boot.version>4.2.0-M2</spring-boot.version>
+		<spring-cloud-build.version>5.1.0-M1</spring-cloud-build.version>
 		<kotlin.version>2.4.10</kotlin.version>
 		<docs.resources.dir>${project.build.directory}/build-docs</docs.resources.dir>
 		<docs.classes.dir>${project.build.directory}/build-docs-classes</docs.classes.dir>
diff --git a/release-ci-settings.xml b/release-ci-settings.xml
deleted file mode 100644
index 07449fc3..00000000
--- a/release-ci-settings.xml
+++ /dev/null
@@ -1,162 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<!--
-  ~ Copyright 2013-2025 the original author or authors.
-  ~
-  ~ Licensed under the Apache License, Version 2.0 (the "License");
-  ~ you may not use this file except in compliance with the License.
-  ~ You may obtain a copy of the License at
-  ~
-  ~      https://www.apache.org/licenses/LICENSE-2.0
-  ~
-  ~ Unless required by applicable law or agreed to in writing, software
-  ~ distributed under the License is distributed on an "AS IS" BASIS,
-  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  ~ See the License for the specific language governing permissions and
-  ~ limitations under the License.
-  -->
-<!--
-  Maven settings used exclusively on commercial OSS release branches
-  (release/VERSION branches in *-commercial repos).
-
-  This file is placed at the repo root as release-ci-settings.xml during
-  branch initialization and is passed to Maven via the settings flag
-  by deploy.yml when the file is detected.  It is deleted by
-  spring-release-train-project-ready before the release is finalised so it
-  never appears in the OSS repo history.
-
-  Credentials are read from environment variables set by the CI workflow:
-  COMMERCIAL_ARTIFACTORY_USERNAME and COMMERCIAL_ARTIFACTORY_PASSWORD
--->
-<settings xmlns="http://maven.apache.org/SETTINGS/1.0.0"
-          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-          xsi:schemaLocation="http://maven.apache.org/SETTINGS/1.0.0
-                              http://maven.apache.org/xsd/settings-1.0.0.xsd">
-
-	<servers>
-		<server>
-			<id>spring-commercial-snapshot</id>
-			<username>${env.COMMERCIAL_ARTIFACTORY_USERNAME}</username>
-			<password>${env.COMMERCIAL_ARTIFACTORY_PASSWORD}</password>
-		</server>
-		<server>
-			<id>spring-commercial-release</id>
-			<username>${env.COMMERCIAL_ARTIFACTORY_USERNAME}</username>
-			<password>${env.COMMERCIAL_ARTIFACTORY_PASSWORD}</password>
-		</server>
-		<!--
-		  Provides credentials when a pom.xml distributionManagement still carries the
-		  OSS server id 'repo.spring.io' but deploy.yml has patched its URL to point at
-		  commercial Artifactory.  Maven looks up credentials by server id, so this entry
-		  ensures the upload is authenticated even before the id is renamed.
-		-->
-		<server>
-			<id>repo.spring.io</id>
-			<username>${env.COMMERCIAL_ARTIFACTORY_USERNAME}</username>
-			<password>${env.COMMERCIAL_ARTIFACTORY_PASSWORD}</password>
-		</server>
-		<server>
-			<id>repo-spring-io-spring-commercial-snapshot</id>
-			<username>${env.COMMERCIAL_ARTIFACTORY_USERNAME}</username>
-			<password>${env.COMMERCIAL_ARTIFACTORY_PASSWORD}</password>
-		</server>
-		<server>
-			<id>repo-spring-io-spring-commercial-release</id>
-			<username>${env.COMMERCIAL_ARTIFACTORY_USERNAME}</username>
-			<password>${env.COMMERCIAL_ARTIFACTORY_PASSWORD}</password>
-		</server>
-	</servers>
-
-	<profiles>
-		<profile>
-			<!--
-			  Activates alongside the pom.xml 'spring' profile (via -Pspring in the
-			  Maven command).  Maven merges both; this adds the four commercial repos
-			  while pom.xml contributes the OSS repos (spring-snapshots, etc.).
-			  Commercial Artifactory does not carry OSS snapshots, so spring-snapshots
-			  from pom.xml remains the source for those.
-			-->
-			<id>spring</id>
-			<repositories>
-				<repository>
-					<id>spring-commercial-snapshot</id>
-					<name>Spring Commercial Snapshot Repository</name>
-					<url>https://usw1.packages.broadcom.com/artifactory/spring-enterprise-maven-dev-local</url>
-					<snapshots>
-						<enabled>true</enabled>
-					</snapshots>
-					<releases>
-						<enabled>false</enabled>
-					</releases>
-				</repository>
-				<repository>
-					<id>spring-commercial-release</id>
-					<name>Spring Commercial Release Repository</name>
-					<url>https://usw1.packages.broadcom.com/artifactory/spring-enterprise-maven-prod-local</url>
-					<snapshots>
-						<enabled>false</enabled>
-					</snapshots>
-				</repository>
-				<repository>
-					<id>repo-spring-io-spring-commercial-snapshot</id>
-					<name>Spring Commercial Snapshot Repository On repo.spring.io</name>
-					<url>https://repo.spring.io/artifactory/spring-commercial-snapshot-remote</url>
-					<snapshots>
-						<enabled>true</enabled>
-					</snapshots>
-					<releases>
-						<enabled>false</enabled>
-					</releases>
-				</repository>
-				<repository>
-					<id>repo-spring-io-spring-commercial-release</id>
-					<name>Spring Commercial Release Repository On repo.spring.io</name>
-					<url>https://repo.spring.io/artifactory/spring-commercial-release-remote</url>
-					<snapshots>
-						<enabled>false</enabled>
-					</snapshots>
-				</repository>
-			</repositories>
-			<pluginRepositories>
-				<pluginRepository>
-					<id>spring-commercial-snapshot</id>
-					<name>Spring Commercial Snapshot Repository</name>
-					<url>https://usw1.packages.broadcom.com/artifactory/spring-enterprise-maven-dev-local</url>
-					<snapshots>
-						<enabled>true</enabled>
-					</snapshots>
-					<releases>
-						<enabled>false</enabled>
-					</releases>
-				</pluginRepository>
-				<pluginRepository>
-					<id>spring-commercial-release</id>
-					<name>Spring Commercial Release Repository</name>
-					<url>https://usw1.packages.broadcom.com/artifactory/spring-enterprise-maven-prod-local</url>
-					<snapshots>
-						<enabled>false</enabled>
-					</snapshots>
-				</pluginRepository>
-				<pluginRepository>
-					<id>repo-spring-io-spring-commercial-snapshot</id>
-					<name>Spring Commercial Snapshot Repository On repo.spring.io</name>
-					<url>https://repo.spring.io/artifactory/spring-commercial-snapshot-remote</url>
-					<snapshots>
-						<enabled>true</enabled>
-					</snapshots>
-					<releases>
-						<enabled>false</enabled>
-					</releases>
-				</pluginRepository>
-				<pluginRepository>
-					<id>repo-spring-io-spring-commercial-release</id>
-					<name>Spring Commercial Release Repository On repo.spring.io</name>
-					<url>https://repo.spring.io/artifactory/spring-commercial-release-remote</url>
-					<snapshots>
-						<enabled>false</enabled>
-					</snapshots>
-				</pluginRepository>
-			</pluginRepositories>
-		</profile>
-	</profiles>
-
-</settings>
diff --git a/spring-cloud-build-dependencies/pom.xml b/spring-cloud-build-dependencies/pom.xml
index 361c0513..510a6364 100644
--- a/spring-cloud-build-dependencies/pom.xml
+++ b/spring-cloud-build-dependencies/pom.xml
@@ -5,7 +5,7 @@
 	<modelVersion>4.0.0</modelVersion>
 	<groupId>org.springframework.cloud</groupId>
 	<artifactId>spring-cloud-build-dependencies</artifactId>
-	<version>5.1.0-INTERNAL-SNAPSHOT</version>
+	<version>5.1.0-M1</version>
 	<name>spring-cloud-build-dependencies</name>
 	<packaging>pom</packaging>
 	<description>Spring Cloud Build Dependencies: an internal BOM for use with Spring
@@ -14,12 +14,12 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-dependencies</artifactId>
-		<version>4.2.0-INTERNAL-SNAPSHOT</version>
+		<version>4.2.0-M2</version>
 		<relativePath/>
 	</parent>
 	<properties>
 		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-		<spring-boot.version>4.2.0-INTERNAL-SNAPSHOT</spring-boot.version>
+		<spring-boot.version>4.2.0-M2</spring-boot.version>
 		<!-- Reproducible builds. This module does not inherit from spring-cloud-build,
 	 so the property has to be repeated here. Keep in sync with the parent pom. -->
 		<project.build.outputTimestamp>1980-02-01T00:00:00Z</project.build.outputTimestamp>
diff --git a/spring-cloud-build-tools/pom.xml b/spring-cloud-build-tools/pom.xml
index 6bce0662..0bd9be26 100644
--- a/spring-cloud-build-tools/pom.xml
+++ b/spring-cloud-build-tools/pom.xml
@@ -10,7 +10,7 @@
 	<parent>
 		<groupId>org.springframework.cloud</groupId>
 		<artifactId>spring-cloud-build</artifactId>
-		<version>5.1.0-INTERNAL-SNAPSHOT</version>
+		<version>5.1.0-M1</version>
 	</parent>
 	<dependencies>
 		<dependency>
diff --git a/spring-cloud-dependencies-parent/pom.xml b/spring-cloud-dependencies-parent/pom.xml
index f25b7059..aaac4ae3 100644
--- a/spring-cloud-dependencies-parent/pom.xml
+++ b/spring-cloud-dependencies-parent/pom.xml
@@ -4,7 +4,7 @@
 		 xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
 	<modelVersion>4.0.0</modelVersion>
 	<groupId>org.springframework.cloud</groupId>
-	<version>5.1.0-INTERNAL-SNAPSHOT</version>
+	<version>5.1.0-M1</version>
 	<artifactId>spring-cloud-dependencies-parent</artifactId>
 	<packaging>pom</packaging>
 	<name>spring-cloud-dependencies-parent</name>