Mention location of cluster stack releases for scs/scs2.

Signed-off-by: Kurt Garloff <kurt@garloff.de>

Author: garloff

README.md

@@ -15,7 +15,14 @@ API. Designed to support multiple providers and a broad range of Kubernetes
 versions, it offers a standardized approach to configuring and operating
 Kubernetes environments. For detailed information see [docs.scs.community](https://docs.scs.community/docs/container/components/cluster-stacks/components/cluster-stacks/overview).
 
+## Releases
+
+Releases for the providers openstack/scs and openstack/scs2 are published in
+the [SCS regsitry](oci://registry.scs.community/kaas/cluster-stacks).
+
 ## Community
 
 - [Matrix](https://matrix.to/#/!NZpJdPGjAHISXnHUil:matrix.org)
 - [notes](https://input.scs.community/2025-scs-team-container)
+
+