diff --git a/HowTos/UCC_Release_Notes.rst b/HowTos/UCC_Release_Notes.rst
index 96a712f5b..2b831f690 100644
--- a/HowTos/UCC_Release_Notes.rst
+++ b/HowTos/UCC_Release_Notes.rst
@@ -44,6 +44,8 @@ Release Notes
 
   - Workaround: initialize your controller to 6.5 first and upgrade to 6.6. Controllers already installed with 6.3 or newer should be able to upgrade to 6.6 without issue.
 
+- The controller's database version and schema are changed in 6.6. You might notice that there will be a brief period of error messages in the controller's log while this change is happening. The errors should stop without user intervention after the upgrade is complete. 
+
 **Issues Corrected in Release 6.6**
 
 - **AVX-14515** - Exception seen when configuring vendor integration with a Palo Alto Firewall VM which has no route tables.