diff --git a/docs/known_issues.md b/docs/known_issues.md
index 99438b1fe..1bacc2d34 100644
--- a/docs/known_issues.md
+++ b/docs/known_issues.md
@@ -8,7 +8,7 @@ hide:
 
 # Known issues with the LUMI software stacks
 
-## Issues with 22.12 and 23.03.
+## All versions
 
 -   Some SUSE-provided tools may not work when the `ncurses` module is loaded.
 
@@ -27,7 +27,3 @@ hide:
     which forces `gdb` to use the `libncursesw` from the system and keeps it happy.
 
 
-## Issues with older versions of the LUMI stack
-
-This documentation was not yet developed when those older stacks were build.
-
diff --git a/docs/whats_new.md b/docs/whats_new.md
index a8b18769e..de46fea6d 100644
--- a/docs/whats_new.md
+++ b/docs/whats_new.md
@@ -8,8 +8,34 @@ hide:
 
 # What's new in the LUMI software stack
 
+## Release 20240916
+
+-   See the [user update after the august-september 2024 maintenance](https://lumi-supercomputer.github.io/LUMI-training-materials/User-Updates/Update-202409/)
+    for a more complete list of changes.
+
+-   New software stacks for the 23.12 and 24.03 versions are provided.
+
+    -   `LUMI/24.03` is our preferred software stack and the only one we can fully support.
+        We already provide a lot of user-installable EasyConfigs for this stack.
+
+    -   `LUMI/23.12` is offered as-is. We do not intend to develop much software on top of it
+        as it will likely be rather short-lived and as we do not receive upstream support for 
+        this stack as it does not officially support ROCm 6.0. As most software versions are 
+        the same as in 23.09, it should be easy to update build recipes and give you some
+        bug fixes in the GNU and CCE compilers. The AMD compilers in both cpeAOCC and
+        cpeAMD though are much newer versions with all consequences this has...
+
+-   Several build recipes for `LUMI/23.09` have been revised to try to work around problems.
+    Note however that the preferred solution is to move to `LUMI/24.03`.
+
+-   Several old build recipes that we know do not work properly anymore, have been archived.
+
+
 ## Release 20240909
 
+-   Internal release only as the system was down much longer than expected due to 
+    a power delivery issue.
+
 -   The first fixes to be able to use old programming environments again, at
     least to run on LUMI.