diff --git a/doc/release-notes.md b/doc/release-notes.md
--- a/doc/release-notes.md
+++ b/doc/release-notes.md
@@ -4,3 +4,6 @@
 
   <https://download.bitcoinabc.org/0.23.9/>
 
+This release includes the following features and fixes:
+  - Improvements to the Avalanche experimental feature.
+  - Test performance improvements.