diff --git a/docs/ReleaseNotes.html b/docs/ReleaseNotes.html
index 2a096b44ae7..3736c96c9e4 100644
--- a/docs/ReleaseNotes.html
+++ b/docs/ReleaseNotes.html
@@ -634,6 +634,9 @@ storage have the same linkage they will have after being read in.
 Clients must replace calls to
 <tt>GlobalValue::hasNotBeenReadFromBitcode</tt> with
 <tt>GlobalValue::isMaterializable</tt>.</li>
+
+<li>FIXME: Debug info has been totally redone. Add pointers to new APIs. Substantial caveats about compatibility of .ll and .bc files.</li>
+
 </ul>
 
 </div>