diff --git a/RELEASE_NOTES.md b/RELEASE_NOTES.md
index 7b06c6ab5..2f788ead1 100644
--- a/RELEASE_NOTES.md
+++ b/RELEASE_NOTES.md
@@ -1,7 +1,19 @@
 ## Validator Changes
 
-* no changes
+* Fix problem with evaluating extension contexts 
+* Fix up support for inactive codes and fix error message syntax
+* Fix issue with collection status of resolve() being wrong
+* Improved paths in profile error messages
+* Fix problem with extension slicing being missed sometimes.
+* Fix problem with code validation caching ignoring whitespace
+* Produce useful error message when whitespace is wrong in display name
+* Support for x-version extensions when generating snapshots
 
 ## Other code changes
 
-* no changes
\ No newline at end of file
+* Render inactive property in expansions
+* Resolve URL for x-version extensions
+* Don't warn for loading a wrong version package more than once
+* Do not supercede R4 terminology when loading R5 IGs
+* Migrate type support when generating differentials
+