Index: doc/release_notes.rst
===================================================================
diff -u -r2e4b13843097b6d76d6b830c4a1df423225b9cfd -r8066ff85fbe33f7958ac1a7d543dea3b3e3868a3
--- doc/release_notes.rst	(.../release_notes.rst)	(revision 2e4b13843097b6d76d6b830c4a1df423225b9cfd)
+++ doc/release_notes.rst	(.../release_notes.rst)	(revision 8066ff85fbe33f7958ac1a7d543dea3b3e3868a3)
@@ -4,6 +4,10 @@
 
 2016.04
 -------
+.. note::
+
+    Several none-backwards compatible changes will be part of this release. Use 2016.03 for older models
+
 + update soil names in sbm to the sbm2 names:
   + FirstZoneKsatVer -> KsatVer
   + FirstZoneMinCapacity -> SoilMinThickness