diff --git a/releng/org.eclipse.epp.config/parent/pom.xml b/releng/org.eclipse.epp.config/parent/pom.xml
index 33e6983d..b83b9cf8 100644
--- a/releng/org.eclipse.epp.config/parent/pom.xml
+++ b/releng/org.eclipse.epp.config/parent/pom.xml
@@ -31,17 +31,17 @@
     <maven.build.timestamp.format>yyyyMMdd-HHmm</maven.build.timestamp.format>
     <build>${maven.build.timestamp}</build>
     <!-- Name of the release (no milestone) and the prev/next release name (for where links are needed)-->
-    <RELEASE_NAME>2026-09</RELEASE_NAME>
-    <PREV_RELEASE_NAME>2026-06</PREV_RELEASE_NAME>
-    <NEXT_RELEASE_NAME>2026-12</NEXT_RELEASE_NAME>
+    <RELEASE_NAME>2026-12</RELEASE_NAME>
+    <PREV_RELEASE_NAME>2026-09</PREV_RELEASE_NAME>
+    <NEXT_RELEASE_NAME>2027-03</NEXT_RELEASE_NAME>
     <!-- Name of the milestone -->
-    <RELEASE_MILESTONE>R</RELEASE_MILESTONE>
+    <RELEASE_MILESTONE>M1</RELEASE_MILESTONE>
     <!-- Version of the release -->
-    <RELEASE_VERSION>4.41.0</RELEASE_VERSION>
+    <RELEASE_VERSION>4.42.0</RELEASE_VERSION>
     <!-- Name release directory on download.eclipse.org -->
-    <RELEASE_DIR>202609031000</RELEASE_DIR>
+    <RELEASE_DIR>202610081000</RELEASE_DIR>
     <!-- SimRel Repo to build from -->
-    <SIMREL_REPO>https://download.eclipse.org/staging/2026-09/</SIMREL_REPO>
+    <SIMREL_REPO>https://download.eclipse.org/staging/2026-12/</SIMREL_REPO>
     <!-- ID used to generate the filename of the packages -->
     <eclipse.simultaneous.release.id>${RELEASE_NAME}-${RELEASE_MILESTONE}</eclipse.simultaneous.release.id>
     <!-- Timestamp used in various places, e.g., the about dialog (see about.mappings) -->
@@ -50,7 +50,7 @@
     <!-- eclipse.simultaneous.release.name value for non-R builds -->
     <!-- <eclipse.simultaneous.release.name>${RELEASE_NAME} ${RELEASE_MILESTONE} (${RELEASE_VERSION} ${RELEASE_MILESTONE})</eclipse.simultaneous.release.name> -->
     <!-- eclipse.simultaneous.release.name value for R builds -->
-    <eclipse.simultaneous.release.name>${RELEASE_NAME} (${RELEASE_VERSION})</eclipse.simultaneous.release.name>
+    <eclipse.simultaneous.release.name>${RELEASE_NAME} ${RELEASE_MILESTONE} (${RELEASE_VERSION} ${RELEASE_MILESTONE})</eclipse.simultaneous.release.name>
     <!-- Upstream p2 repository, used as a source for pre-compiled build artifacts -->
     <eclipse.simultaneous.release.repository>${SIMREL_REPO}</eclipse.simultaneous.release.repository>
     <!-- Used for the variable below to update easily, e.g., to 25. -->