Update release notes wrt backported fix #616

Author: cowtowncoder

release-notes/CREDITS-2.x

@@ -237,3 +237,9 @@ Marco Belladelli (mbladel@github)
 * Contributed fix for #584: Deserialization of `null` String values in Arrays / `Collection`s
   not working as expected
  (2.15.0)
+
+Motonori IWAMURO (vmi@github)
+
+* Contributed fix for #616: Fix mismatch in `setNextIsUnwrapped(boolean)` in
+  `XmlBeanSerializerBase#serializeFieldsFiltered()`
+ (2.16.1)

release-notes/VERSION-2.x

@@ -4,6 +4,12 @@ Project: jackson-dataformat-xml
 === Releases ===
 ------------------------------------------------------------------------
 
+2.16.1 (not yet released)
+
+#616: Fix mismatch in `setNextIsUnwrapped(boolean)` in
+  `XmlBeanSerializerBase#serializeFieldsFiltered()`
+ (fix contributed by Motonori I)
+
 2.16.0 (15-Nov-2023)
 
 #148: `@JacksonXmlElementWrapper` not respected when serializing