diff --git a/RELEASENOTES.md b/RELEASENOTES.md
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@@ -1,3 +1,7 @@
+Version 3.1s3
+====
+More extensive changes have been made to improve the stability by making some operations reentrant. The instabilities occur sometimes when interrupting a play session by another.
+
 Version 3.1s1 and 3.1s2
 ====
 **Bug fix**