diff --git a/docs/ReleaseNotes.rst b/docs/ReleaseNotes.rst
index dbffb53d5a5..bc35e62189a 100644
--- a/docs/ReleaseNotes.rst
+++ b/docs/ReleaseNotes.rst
@@ -40,6 +40,10 @@ Non-comprehensive list of changes in this release
    functionality, or simply have a lot to talk about), see the `NOTE` below
    for adding a new subsection.
 
+* LLVM's ``WeakVH`` has been renamed to ``WeakTrackingVH`` and a new ``WeakVH``
+  has been introduced.  The new ``WeakVH`` nulls itself out on deletion, but
+  does not track values across RAUW.
+
 * ... next change ...
 
 .. NOTE