diff --git a/RELEASE-NOTES.html b/RELEASE-NOTES.html
index d422735ac..6f53f58b9 100644
--- a/RELEASE-NOTES.html
+++ b/RELEASE-NOTES.html
@@ -39,6 +39,10 @@ This release is fully source and binary compatible with v3.2.
 Please check the bug fixes to ensure you weren't relying on the behaviour of a bug.
 </p>
 <p>
+One bug was that the ExtendedProperties was hiding properties with empty 
+property values. It is possible you could have been depending on that feature. 
+See [COLLECTIONS-238].
+<p>
 There are xxxxxxxxxxxxxxxxxxx new <i>deprecations</i>:<br />
 If this causes major headaches to anyone please contact commons-dev at jakarta.apache.org.
 </p>