diff --git a/releasenotes/notes/identity_client-635275d43abbb807.yaml b/releasenotes/notes/identity_client-635275d43abbb807.yaml
new file mode 100644
index 0000000..6f984b7
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+++ b/releasenotes/notes/identity_client-635275d43abbb807.yaml
@@ -0,0 +1,5 @@
+---
+features:
+  - |
+    Enhances the v3 identity client with the ``check_token_existence``
+    endpoint, allowing users to check the existence of tokens