certificate rotation through the certificates API has been promoted from alpha to beta. RBAC cluster roles for the certificates controller have been added for common uses of the certificates API, such as the kubelet's.

* [beta] SelfSubjectRulesReview, an API that lets a user see what actions they can perform with a namespace, has been added to the authorization.k8s.io API group. This bulk query is intended to enable UIs to show/hide actions based on the end user, and for users to quickly...

* Add selfsubjectrulesreview API for allowing users to query which permissions they have in a given namespace. ([#48051](https://github.com/kubernetes/kubernetes/pull/48051), [@xilabao](https://github.com/xilabao))

- Validating admission webhooks are now properly called for CREATE operations on the following resources: tokenreviews, subjectaccessreviews, localsubjectaccessreviews, selfsubjectaccessreviews, selfsubjectrulesreviews ([#76959](https://github.com/kubernetes/kubernetes/pull/76959), [@sbezverk](https://github.com/sbezverk))

### Autoscaling