Implement #679
diff --git a/release-notes/VERSION b/release-notes/VERSION
index 6db6840..986df00 100644
--- a/release-notes/VERSION
+++ b/release-notes/VERSION
@@ -10,6 +10,7 @@
 #348: ObjectMapper.valueToTree does not work with @JsonRawValue
  (reported by Chris P, pimlottc@github)
 #649: Make `BeanDeserializer` use new `parser.nextFieldName()` and `.hasTokenId()` methods
+#679: Add `isEmpty()` implementation for `JsonNode` serializers
 #696: Copy constructor does not preserve `_injectableValues`
  (reported by Charles A)
 #700: Cannot Change Default Abstract Type Mapper from LinkedHashMap