diff --git a/doc/RELEASE_NOTES.txt b/doc/RELEASE_NOTES.txt
index 2a04b7c15765d86023cc099f94cc245e5b476f9b..a010cd87fb088cc0c2639ead6bac59819b9cb2e5 100644
--- a/doc/RELEASE_NOTES.txt
+++ b/doc/RELEASE_NOTES.txt
@@ -1,3 +1,10 @@
+Release 0.12 (05/06/2016)
+=============================
+
+- Developed processing for HDF5 metadata in Mongo cataloging plugin
+- Modified catalog API and service interfaces to use file collections on 
+  a per-experiment basis
+
 Release 0.11 (04/29/2016)
 =============================