diff --git a/nixos/doc/manual/release-notes/rl-unstable.xml b/nixos/doc/manual/release-notes/rl-unstable.xml
index 34ffe1d6d32..cdbd074e782 100644
--- a/nixos/doc/manual/release-notes/rl-unstable.xml
+++ b/nixos/doc/manual/release-notes/rl-unstable.xml
@@ -35,6 +35,20 @@ and old steam package -- to steamOriginal.
was accordingly renamed to bomi
+
+
+ The default NIX_PATH for NixOS now includes
+ /nix/var/nix/profiles/per-user/root/channels, so it's
+ easy to add custom channels.
+
+
+ Moreover, whenever a nixos-rebuild <action>
+ --upgrade is issued, every channel that includes a file
+ called .update-on-nixos-rebuild will be upgraded
+ alongside of the nixos channel.
+
+
+