diff --git a/release-notes/CREDITS-2.x b/release-notes/CREDITS-2.x
index 9f8b89aa..281c7322 100644
--- a/release-notes/CREDITS-2.x
+++ b/release-notes/CREDITS-2.x
@@ -19,6 +19,7 @@ Contributors:
 
 WrongWrong (@k163377)
 * #687: Optimize and Refactor KotlinValueInstantiator.createFromObjectWith
+* #686: Add KotlinPropertyNameAsImplicitName option
 * #685: Streamline default value management for KotlinFeatures
 * #684: Update Kotlin Version to 1.6
 * #682: Remove MissingKotlinParameterException and replace with MismatchedInputException
diff --git a/release-notes/VERSION-2.x b/release-notes/VERSION-2.x
index 7de33801..f9372401 100644
--- a/release-notes/VERSION-2.x
+++ b/release-notes/VERSION-2.x
@@ -21,6 +21,9 @@ Co-maintainers:
 #687: Optimize and Refactor KotlinValueInstantiator.createFromObjectWith.
  This improves deserialization throughput about 1.3 ~ 1.5 times faster.
  https://github.com/FasterXML/jackson-module-kotlin/pull/687#issuecomment-1637365799
+#686: Added KotlinPropertyNameAsImplicitName feature to use Kotlin property names as implicit names for getters.
+ Enabling this feature eliminates some of the problems summarized in #630,
+ but also causes some behavioral changes and performance degradation.
 #685: Streamline default value management for KotlinFeatures.
  This improves the initialization cost of kotlin-module a little.
 #684: Kotlin 1.5 has been deprecated and the minimum supported Kotlin version will be updated to 1.6.