diff --git a/nixos/doc/manual/release-notes/rl-2611.section.md b/nixos/doc/manual/release-notes/rl-2611.section.md
index 01507338ec5f..eb0072f56a9f 100644
--- a/nixos/doc/manual/release-notes/rl-2611.section.md
+++ b/nixos/doc/manual/release-notes/rl-2611.section.md
@@ -57,6 +57,8 @@
 
 - `security.polkit.enablePkexecWrapper` has been introduced, making the `pkexec` setuid wrapper opt-in.
 
+- Apache Kafka has dropped support for ZooKeeper mode. The `apacheKafka_3_9` and `apacheKafka_4_0` packages have been removed, as every remaining packaged version is KRaft-only. The `services.apache-kafka.zookeeper` option (previously an alias for `services.apache-kafka.settings."zookeeper.connect"`) has been removed; migrate your cluster to [KRaft](#module-services-apache-kafka-kraft) mode instead.
+
 - When Avahi's mDNS resolver is enabled (`services.avahi.nssmdns4` or `services.avahi.nssmdns6`), only the minimal mDNS resolver is enabled by default to avoid adding a 5 second delay to every failed reverse hostname lookup (e.g., delaying ping by 5 seconds). The "full" mDNS resolver now remains disabled unless `services.avahi.nssmdnsFull` is also enabled. Users who have customized [`/etc/mdns.allow`](https://github.com/avahi/nss-mdns/tree/master#etcmdnsallow) to allow mDNS domains not ending `.local` must enable `services.avahi.nssmdnsFull` to continue to resolve such domains.
 
 - `systemd.user.extraConfig` has been removed in favor of the structured [](#opt-systemd.user.settings.Manager) option. Use `systemd.user.settings.Manager` to set any `systemd-user.conf(5)` option directly. For example, replace `systemd.user.extraConfig = "DefaultTimeoutStartSec=60";` with `systemd.user.settings.Manager.DefaultTimeoutStartSec = 60;`.