diff --git a/JenkinsJobs/Releng/prepareNextDevCycle.jenkinsfile b/JenkinsJobs/Releng/prepareNextDevCycle.jenkinsfile
index 44946a21b21..d4a517f913d 100644
--- a/JenkinsJobs/Releng/prepareNextDevCycle.jenkinsfile
+++ b/JenkinsJobs/Releng/prepareNextDevCycle.jenkinsfile
@@ -76,6 +76,7 @@ pipeline {
 			steps {
 				checkout scm
 				script { // Always load the script from the very same state this pipeline is loaded (to ensure consistency)
+					utilities = load "JenkinsJobs/shared/utilities.groovy"
 					githubAPI = load "JenkinsJobs/shared/githubAPI.groovy"
 					githubAPI.setDryRun(params.DRY_RUN)
 				}
@@ -154,7 +155,7 @@ pipeline {
 					"(?<prefix># Schedule:.*\\R)(?s).*(?<suffix>\\R'''\\))" : "\${prefix}${I_BUILD_SCHEDULE}\${suffix}",
 				])
 				
-				commitAllChangesExcludingSubmodules("Update versions to ${NEXT_RELEASE_VERSION} in build scripts")
+				utilities.commitAllChangesExcludingSubmodules("Update versions to ${NEXT_RELEASE_VERSION} in build scripts")
 			}
 		}
 		stage('Move previous version to current RC') {
@@ -182,7 +183,7 @@ pipeline {
 					'previousReleaseVersion=.*' : "previousReleaseVersion=${PREVIOUS_RELEASE_CANDIDATE_TAG}",
 					'previousReleaseVersionRepo=.*' : "previousReleaseVersionRepo=${PREVIOUS_RELEASE_VERSION}-I-builds",
 				])
-				commitAllChangesExcludingSubmodules("Move previous version to ${PREVIOUS_RELEASE_CANDIDATE_TAG} in build scripts")
+				utilities.commitAllChangesExcludingSubmodules("Move previous version to ${PREVIOUS_RELEASE_CANDIDATE_TAG} in build scripts")
 			}
 		}
 		stage('Clear Qualifier-update files') {
@@ -242,7 +243,7 @@ pipeline {
 				])
 				sh "mv cje-production/streams/repositories_master.txt cje-production/streams/repositories_${MAINTENANCE_BRANCH}.txt"
 				
-				commitAllChangesExcludingSubmodules("Move ${PREVIOUS_RELEASE_VERSION}-I builds to ${MAINTENANCE_BRANCH} branch")
+				utilities.commitAllChangesExcludingSubmodules("Move ${PREVIOUS_RELEASE_VERSION}-I builds to ${MAINTENANCE_BRANCH} branch")
 				
 				// Switch back to master for subsequent parts of this pipeline
 				sh 'git checkout master'
@@ -441,6 +442,8 @@ pipeline {
 	}
 }
 
+@groovy.transform.Field
+def utilities = null
 @groovy.transform.Field
 def githubAPI = null
 
@@ -466,28 +469,9 @@ def parseDate(String dateString) {
 }
 
 def replaceInFile(String filePath, Map<String,String> replacements) {
-	replaceAllInFile(filePath, replacements.collectEntries{ k, v -> [java.util.regex.Pattern.quote(k), v] });
+	utilities.replaceInFile(filePath, replacements)
 }
 
 def replaceAllInFile(String filePath, Map<String,String> replacements) {
-	def content = readFile(filePath)
-	for (entry in replacements) {
-		def newContent = content.replaceAll(entry.key, entry.value)
-		if (newContent == content && !(content =~ entry.key)) { // pattern matches, but the replacement is equal to the current content
-			error("Pattern not found in file '${filePath}': ${entry.key}")
-		}
-		content = newContent
-	}
-	writeFile(file:filePath, text: content)
-}
-
-def commitAllChangesExcludingSubmodules(String commitMessage) {
-	withEnv(["COMMIT_MESSAGE=${commitMessage}"]) {
-		sh '''
-			#Commit all changes, except for the updated sub-modules here
-			git add --all
-			git restore --staged $(git submodule foreach --quiet 'echo $sm_path')
-			git commit --message "${COMMIT_MESSAGE}"
-		'''
-	}
+	utilities.replaceAllInFile(filePath, replacements)
 }
diff --git a/JenkinsJobs/Releng/promoteBuild.jenkinsfile b/JenkinsJobs/Releng/promoteBuild.jenkinsfile
index eb04934ef42..2431e449168 100644
--- a/JenkinsJobs/Releng/promoteBuild.jenkinsfile
+++ b/JenkinsJobs/Releng/promoteBuild.jenkinsfile
@@ -67,6 +67,7 @@ pipeline {
 					)
 					// This is DL_DROP_ID for Eclipse and Equinox
 					assignEnvVariable('DL_DROP_ID', "${DL_TYPE}-${DL_LABEL}-${buildTimestamp}")
+					assignEnvVariable('MAINTENANCE_BRANCH', "R${BUILD_MAJOR}_${BUILD_MINOR}_maintenance")
 					
 					if (!env.SIGNOFF_BUG) {
 						echo '''\
@@ -79,14 +80,20 @@ pipeline {
 				}
 			}
 		}
-		stage('Checkout Git') {
+		stage('Checkout SCM') {
 			steps {
 				dir("${WORKSPACE}/repository") {
 					checkout scm
 					script { // Always load the script from the very same state this pipeline is loaded (to ensure consistency)
+						utilities = load "JenkinsJobs/shared/utilities.groovy"
 						githubAPI = load "JenkinsJobs/shared/githubAPI.groovy"
 					}
 					sh '''#!/bin/bash -xe
+						git branch --force master HEAD
+						git fetch origin "refs/heads/${MAINTENANCE_BRANCH}"
+						git reflog show master
+						git reflog show "origin/${MAINTENANCE_BRANCH}"
+						
 						git fetch origin tag "${REPO_ID}"
 						git checkout "${REPO_ID}"
 						# Check out all submodules at the specified REPO_ID
@@ -187,6 +194,108 @@ pipeline {
 				]
 			}
 		}
+		stage('Update build configurations') {
+			when {
+				environment name: 'DL_TYPE', value: 'R'
+			}
+			environment {
+				RELEASE_P2_REPOSITORY = "https://download.eclipse.org/eclipse/updates/${BUILD_MAJOR}.${BUILD_MINOR}/${DL_DROP_ID}/"
+			}
+			steps {
+				dir("${WORKSPACE}/repository") {
+					script { // Update the master branch
+						sh 'git checkout master'
+						sh '''
+							mvn -f eclipse-platform-parent/pom.xml org.eclipse.tycho:tycho-versions-plugin:set-property \
+								-Dproperties=previous-release.baseline \
+								-DnewPrevious-release.baseline="${RELEASE_P2_REPOSITORY}"
+						'''
+						utilities.replaceAllInFile('cje-production/buildproperties.txt', [
+							'BASEBUILDER_TAG=".*?"' : "BASEBUILDER_TAG=\"${BUILD_MAJOR}.${BUILD_MINOR}\"",
+							'API_PREV_REF_LABEL=".*?"' : "API_PREV_REF_LABEL=\"${BUILD_MAJOR}.${BUILD_MINOR}\"",
+							'PREVIOUS_RELEASE_VER=".*?"' : "PREVIOUS_RELEASE_VER=\"${BUILD_MAJOR}.${BUILD_MINOR}\"",
+							'PREVIOUS_RELEASE_REPO_ID=".*?"' : "PREVIOUS_RELEASE_REPO_ID=\"${BUILD_MAJOR}.${BUILD_MINOR}\"",
+							'BASEBUILD_ID=".*?"' : "BASEBUILD_ID=\"${DL_DROP_ID}\"",
+							'PREVIOUS_RELEASE_ID=".*?"' : "PREVIOUS_RELEASE_ID=\"${DL_DROP_ID}\"",
+						])
+						utilities.replaceAllInFile('eclipse.platform.releng.tychoeclipsebuilder/eclipse-junit-tests/src/main/resources/equinoxp2tests.properties', [
+							'eclipse-platform-\\d+.\\d+[^-]*?-' : "eclipse-platform-${BUILD_MAJOR}.${BUILD_MINOR}-",
+							'org.eclipse.equinox.p2.tests.last.release.build.repo=.*' : "org.eclipse.equinox.p2.tests.last.release.build.repo=https://download.eclipse.org/equinox/drops/${DL_DROP_ID}/",
+						])
+						utilities.replaceAllInFile('eclipse.platform.releng.tychoeclipsebuilder/eclipse-junit-tests/src/main/resources/label.properties', [
+							'previousReleaseVersion=.*' : "previousReleaseVersion=${BUILD_MAJOR}.${BUILD_MINOR}",
+						])
+						utilities.replaceAllInFile('eclipse.platform.releng.tychoeclipsebuilder/eclipse-junit-tests/src/main/scripts/getPreviousRelease.sh', [
+							'R\\/R-\\d+.\\d+-\\d{12}' : "R/${DL_DROP_ID}",
+							'-\\d+.\\d+-linux-gtk-' : "-${BUILD_MAJOR}.${BUILD_MINOR}-linux-gtk-",
+						])
+						utilities.replaceAllInFile('production/testScripts/configuration/streamSpecific.properties', [
+							'previousReleaseLocation=.*' : 'previousReleaseLocation=https://\\${DOWNLOAD_HOST}/eclipse/downloads/drops4/' + DL_DROP_ID + '/',
+							'previousReleaseVersion=.*' : "previousReleaseVersion=${BUILD_MAJOR}.${BUILD_MINOR}",
+							'previousReleaseVersionRepo=.*' : "previousReleaseVersionRepo=${BUILD_MAJOR}.${BUILD_MINOR}",
+						])
+						
+						utilities.commitAllChangesExcludingSubmodules("Update previous release version to ${BUILD_MAJOR}.${BUILD_MINOR} GA across build scripts")
+					}
+					script { // Update the maintenance branch
+						sh 'git checkout -b updateMaintenance "origin/${MAINTENANCE_BRANCH}"'
+						def ecjManifest = sh(script: "curl https://raw.githubusercontent.com/eclipse-jdt/eclipse.jdt.core/refs/tags/${REPO_ID}/org.eclipse.jdt.core.compiler.batch/META-INF/MANIFEST.MF", returnStdout: true).trim()
+						def bundleVersion = readManifest(text: ecjManifest).main['Bundle-Version']
+						def ecjVersion = bundleVersion.substring(0, bundleVersion.indexOf('.qualifier'))
+						sh """
+							mvn -f eclipse-platform-parent/pom.xml org.eclipse.tycho:tycho-versions-plugin:set-property \
+								-Dproperties=eclipse-sdk-repo,previous-release.baseline,cbi-ecj-version \
+								-DnewEclipse-sdk-repo="${RELEASE_P2_REPOSITORY}" \
+								-DnewPrevious-release.baseline="${RELEASE_P2_REPOSITORY}" \
+								-DnewCbi-ecj-version="${ecjVersion}"
+						"""
+						utilities.replaceAllInFile('cje-production/buildproperties.txt', [
+							'ECLIPSE_RUN_REPO="https://download.eclipse.org/eclipse/updates/.*"' : "ECLIPSE_RUN_REPO=\"${RELEASE_P2_REPOSITORY}\"",
+						])
+						
+						utilities.commitAllChangesExcludingSubmodules("Update ${MAINTENANCE_BRANCH} branch with release version for ${BUILD_MAJOR}_${BUILD_MINOR}+ changes")
+					}
+					// Switch back to master for subsequent parts of this pipeline
+					sh 'git checkout master'
+					
+					// Display created commits
+					sh '''#!/bin/bash -xe
+						git log origin/master..master --patch-with-stat --summary
+						git log origin/${MAINTENANCE_BRANCH}..updateMaintenance --patch-with-stat --summary
+					'''
+					sshagent(['github-bot-ssh']) {
+						sh '''#!/bin/bash -xe
+							pushURL=$(git config remote.origin.url)
+							# Switch to SSH, if the configured URL uses HTTPS (we can only push with SSH)
+							if [[ "$pushURL" == http* ]]; then
+								pushURL=$(echo $pushURL|sed --expression 's|https://github.com/|git@github.com:|')
+							fi
+							
+							git push ${pushURL} "master:refs/heads/update-build-to-R${BUILD_MAJOR}.${BUILD_MINOR}"
+							git push ${pushURL} "updateMaintenance:refs/heads/update-${MAINTENANCE_BRANCH}"
+						'''
+					}
+					// Create PRs agains the master and maintenance branch
+					script { withEnv(['GITHUB_BOT_TOKEN=' + credentials('github-bot-token')]) {
+						def masterPR = githubAPI.createPullRequest('eclipse-platform/eclipse.platform.releng.aggregator',
+							"Update previous release version to ${BUILD_MAJOR}.${BUILD_MINOR} GA across build scripts", """\
+							Update the the `${MAINTENANCE_BRANCH}` branch with final ${BUILD_MAJOR}.${BUILD_MINOR} release version.
+							
+							**This should not be submitted before ${BUILD_MAJOR}.${BUILD_MINOR} is finally released.**
+							""".stripIndent(),"update-build-to-R${BUILD_MAJOR}.${BUILD_MINOR}", 'master')
+						
+						githubAPI.createPullRequest('eclipse-platform/eclipse.platform.releng.aggregator',
+							"Update ${MAINTENANCE_BRANCH} branch with release version for ${BUILD_MAJOR}_${BUILD_MINOR}+ changes", """\
+							Update the the `${MAINTENANCE_BRANCH}` branch with final ${BUILD_MAJOR}.${BUILD_MINOR} release version.
+							This complements:
+							- ${masterPR}
+							
+							**This should not be submitted before ${BUILD_MAJOR}.${BUILD_MINOR} is finally released.**
+							""".stripIndent(),"update-${MAINTENANCE_BRANCH}", "${MAINTENANCE_BRANCH}")
+					}}
+				}
+			}
+		}
 		stage('Update acknowledgements') {
 			environment {
 				GITHUB_BOT_TOKEN = credentials('github-bot-token')
@@ -292,6 +401,8 @@ EOF
 	"""
 }
 
+@groovy.transform.Field
+def utilities = null
 @groovy.transform.Field
 def githubAPI = null
 
diff --git a/JenkinsJobs/shared/githubAPI.groovy b/JenkinsJobs/shared/githubAPI.groovy
index 591e824e65b..1246c4d608e 100644
--- a/JenkinsJobs/shared/githubAPI.groovy
+++ b/JenkinsJobs/shared/githubAPI.groovy
@@ -69,6 +69,9 @@ def queryGithubAPI(String method, String endpoint, Map<String, Object> queryPara
 		query += "-d '" + params + "'"
 	}
 	if (IS_DRY_RUN && !method.isEmpty()) {
+		if (!env.GITHUB_BOT_TOKEN) {
+			error 'Required GITHUB_BOT_TOKEN not set'
+		}
 		echo "Query (not send): ${query}"
 		return null
 	}
diff --git a/JenkinsJobs/shared/utilities.groovy b/JenkinsJobs/shared/utilities.groovy
new file mode 100644
index 00000000000..90c8f0109ad
--- /dev/null
+++ b/JenkinsJobs/shared/utilities.groovy
@@ -0,0 +1,29 @@
+
+def replaceInFile(String filePath, Map<String,String> replacements) {
+	replaceAllInFile(filePath, replacements.collectEntries{ k, v -> [java.util.regex.Pattern.quote(k), v] });
+}
+
+def replaceAllInFile(String filePath, Map<String,String> replacements) {
+	def content = readFile(filePath)
+	for (entry in replacements) {
+		def newContent = content.replaceAll(entry.key, entry.value)
+		if (newContent == content && !(content =~ entry.key)) { // pattern matches, but the replacement is equal to the current content
+			error("Pattern not found in file '${filePath}': ${entry.key}")
+		}
+		content = newContent
+	}
+	writeFile(file:filePath, text: content)
+}
+
+def commitAllChangesExcludingSubmodules(String commitMessage) {
+	withEnv(["COMMIT_MESSAGE=${commitMessage}"]) {
+		sh '''
+			#Commit all changes, except for the updated sub-modules here
+			git add --all
+			git restore --staged $(git submodule foreach --quiet 'echo $sm_path')
+			git commit --message "${COMMIT_MESSAGE}"
+		'''
+	}
+}
+
+return this
diff --git a/RELEASE.md b/RELEASE.md
index 9f9d5b392c6..1e040e7b29c 100644
--- a/RELEASE.md
+++ b/RELEASE.md
@@ -93,6 +93,8 @@ The actual steps to release
   * #### **Promote to GA**
     - After Simrel declares RC2 (usually the Friday before release) run the [Promote Build](https://ci.eclipse.org/releng/job/Releng/job/promoteBuild/) job to promote RC2 (or RC2a).
       - `DROP_ID`: Final delease candidate's ID, e.g.: `S-4.36RC2-202505281830/`
+      - This will create pull requests to update the build configuration on the master and corresponding maintenance branch to the promoted release.
+        - Only submit them AFTER the release was finally published.
     - You can subscribe to [cross-project-issues](https://accounts.eclipse.org/mailing-list/cross-project-issues-dev) to get the notifications on Simrel releases.
   * **Contribute to SimRel**
     - If SimRel is not updated before the I-builds are cleaned up (specifically the build for RC2/GA) it will break. 
@@ -120,29 +122,11 @@ The release is scheduled for 10AM EST. Typically the jobs are scheduled beforeha
     - For the Y and P build parameters it's important to know whether or not Y and P builds were run during the release. Since they correspond to java releases on a 6 month cycle, typically they are built in odd-numbered releases.  
     The existing builds are kept for one release, then cleaned up before the next stream that will have Y and P builds. it's convoluted and I dont want to type it out. Remove Y builds on even releases. 
     - If something doesn't get cleaned up properly you can use  Use the [list artifacts](https://ci.eclipse.org/releng/view/Cleanup/job/list_artifacts_from_download_server/) job to generate ta list of what's on the download server and either create a new job to clean it up or update and rerun the cleanup job as appropriate.
-  * **Set Previous Release to GA** 
-    - Everything that was updated to RC2 (see below) should now use the released build.
 
 ### **Preparation for the next Release**
   After RC2 create an issue to track preparation work for the next stream (see [Preparation work for 4.25 (2022-09)](https://github.com/eclipse-platform/eclipse.platform.releng.aggregator/issues/284)).
   - A script to create this issue exists [here](scripts/newReleasePrep.sh) for those who have the hub cli tool installed. The process has been in flux recently so please update the script if necessary, but it provides a helpful template since most tasks in the previous release's issue become links.
 
-#### **Maintenance Branches:**
-  * **Update maintenance branch with release version**
-    - Once the I-build repo is removed for the previous release the maintenance branch will have to use the release location, i.e. any references to `https://download.eclipse.org/eclipse/updates/4.25-I-builds/` will need to be updated to `https://download.eclipse.org/eclipse/updates/4.26/R-4.26-202211231800/`
-    - Functionally this means:
-      - Update the ECLIPSE_RUN_REPO in the [cje-production](cje-production) buildproperties.txt files
-      - Update `eclipse-sdk-repo` in [eclipse-platform-parent/pom.xml](eclipse-platform-parent/pom.xml)
-    - This step can be prepared ahead of time but can't be merged until the release build has been promoted and the update site exists.
-     * **Update ECJ compiler** in the platform build (if it needs to be updated).
-       * To find the new *unqualified* compiler version:
-         - Go to the update site for the release candidate
-         - Click `plugins`
-         - Find the *unqualified* version of the artifact `org.eclipse.jdt.core.complier.batch_${ecjversion}.jar`, i.e. the version consisting only of the _major_._minor_._service_ part, but without qualifier.
-         It's the version of the `org.eclipse.jdt:ecj` artifact at Maven-Central, about to be relased.
-       * Update the `cbi-ecj-version` in [eclipse.platform.releng.aggregator/eclipse-platform-parent/pom.xml](https://github.com/eclipse-platform/eclipse.platform.releng.aggregator/blob/master/eclipse-platform-parent/pom.xml)
-       to the exact version of the to be released`org.eclipse.jdt.core.complier.batch` bundle, e.g.: `3.40.0`
-
 #### **Update the Build Calendar:**
   - Create an [issue](https://github.com/eclipse-platform/eclipse.platform.releng.aggregator/issues/289) and update the [build calendar](https://calendar.google.com/calendar/u/0?cid=cHJmazI2ZmRtcHJ1MW1wdGxiMDZwMGpoNHNAZ3JvdXAuY2FsZW5kYXIuZ29vZ2xlLmNvbQ) for the next GA release based on the [Simultaneous Release schedule](https://wiki.eclipse.org/Simultaneous_Release).
   - Each stream has its own [wiki](https://wiki.eclipse.org/Category:SimRel-2022-06) page with a more detailed schedule.