Add release notes

cowtowncoder · cowtowncoder · commit 8cffbf5a0107 · 2025-09-22T15:09:36.000-07:00
diff --git a/release-notes/VERSION-2.x b/release-notes/VERSION-2.x
@@ -18,6 +18,13 @@ Active maintainers:
 
 No changes since 2.19
 
+2.19.3 (not yet released)
+
+#601: Jackson subtype Avro schema unions are non-deterministic and therefore
+  incompatible with each other
+ (reported by Raphael W)
+ (fix by Vincent E)
+
 2.19.2 (18-Jul-2025)
 
 No changes since 2.19.1
