diff --git a/docs/ReleaseNotes.rst b/docs/ReleaseNotes.rst
index 9f0befb3324..de442580a14 100644
--- a/docs/ReleaseNotes.rst
+++ b/docs/ReleaseNotes.rst
@@ -77,7 +77,8 @@ Changes to TableGen
 Changes to the AArch64 Backend
 ------------------------------
 
-* Introduced support for Armv9-A's Realm Management Extension.
+* Introduced assembly support for Armv9-A's Realm Management Extension (RME)
+  and Scalable Matrix Extension (SME).
 
 Changes to the ARM Backend
 --------------------------