diff --git a/llvm/docs/ReleaseNotes.html b/llvm/docs/ReleaseNotes.html
index fb0c7fbfbd5ac2d48989c8f4008bd60adbf8a6ec..1c2db4eb0c722d0e9143df7045ff280570756136 100644
--- a/llvm/docs/ReleaseNotes.html
+++ b/llvm/docs/ReleaseNotes.html
@@ -694,7 +694,7 @@ frontends.</li>
 <div class="doc_text">
 
 <ul>
-  <li>None yet</li>
+<li><a href="http://llvm.cs.uiuc.edu/PR566">Memory Mapped I/O Intrinsics do not fence memory</a></li>
 </ul>
 
 </div>