Update RELEASE-NOTES.md

JeroenDeDauw · JeroenDeDauw · commit d5f12533267a · 2015-09-03T16:25:09.000+02:00
[skip ci]
diff --git a/RELEASE-NOTES.md b/RELEASE-NOTES.md
@@ -1,6 +1,6 @@
 # Wikibase DataModel release notes
 
-## Version 4.4.0 (2015-09-03)
+## Version 4.4.0 (dev)
 
 * Added `ItemIdParser`
 
