Index: docs/ReleaseNotes.rst
===================================================================
--- docs/ReleaseNotes.rst
+++ docs/ReleaseNotes.rst
@@ -71,6 +71,13 @@
 Changes to the LLVM IR
 ----------------------
 
+Changes to the AArch64 Target
+-----------------------------
+
+During this release:
+
+ * Enabled the new GlobalISel instruction selection framework by default at ``-O0``.
+
 Changes to the ARM Target
 -------------------------