diff --git a/RELEASE_NOTES.md b/RELEASE_NOTES.md
index 3929bea2a..b4cf22a30 100644
--- a/RELEASE_NOTES.md
+++ b/RELEASE_NOTES.md
@@ -1,7 +1,16 @@
 ## Validator Changes
 
 * no changes
+* Add ability to [compile a map file to a StructureDefinition](https://confluence.hl7.org/display/FHIR/Using+the+FHIR+Mapping+Language#UsingtheFHIRMappingLanguage-runtransformsjavavalidator)
+* Add knowledge of additional R5 extensions for StructureDefinitions
+* Fix problem validating extension context on choice types
+* Add hint when binding found on element with multiple types
+* Fix validator to guess system on all uses of code (not just most)
 
 ## Other code changes
 
-* Use cached terminology server responses for unit and integration tests.
\ No newline at end of file
+* Use cached terminology server responses for unit and integration tests.
+* Add more HTTP logging
+* Clean up various issues with graphQL and polymorphic elements
+* Add better support for date/time rendering 
+* Significant speed improvement for terminology caching