nixos/docs: add release-note about amazon-image being GPT

nixos/doc/manual/release-notes/rl-2411.section.md

@@ -203,6 +203,12 @@
 
 - `androidenv.androidPkgs_9_0` has been removed, and replaced with `androidenv.androidPkgs` for a more complete Android SDK including support for Android 9 and later.
 
+- The Amazon disk images (AMIs) have been changed to use a GPT instead of MBR partition table. This change is necessary as we aim to move to a `repart` based image builder in the near future.
+  If you are booted with an old AMI and want to in-place upgrade to 24.11 you **MUST** set `system.stateVersion = "24.05";` or lower in your configuration. This will ensure that the old MBR
+  partition table is used and we do not try to install EFI Bootloader entries on your system which will fail. Note that by default `/etc/nixos/configuration.nix` on our AMIs did not set
+  `system.stateVersion` so you will need to add this line to your configuration manually if you use the on-image configuration. On 24.11 we do now ship with `system.stateVersion = "24.11";` set
+  to avoid these kind of issues in the future.  The AMI boot-mode has also been changed from `legacy-bios` to `uefi-preferred` to ensure that the system boots in UEFI mode if possible.
+
 - `grafana` has been updated to version 11.1. This version doesn't support setting `http_addr` to a hostname anymore, an IP address is expected.
 
 - `deno` has been updated to v2 which has breaking changes. Upstream will be abandoning v1 soon but for now you can use `deno_1` if you are yet to migrate (will be removed prior to cutting a final 24.11 release).