and `apiserver_webhooks_x509_missing_san_total`. This metric measures a number of connections to webhooks/aggregated API servers that use certificates without Subject Alternative Names. It being non-zero is a warning sign that these connections will stop functioning in the future since Golang is going to deprecate x509 certificate subject Common Names for server hostname verification. ([#95396](https://github.com/kubernetes/kubernetes/pull/95396), [@stlaz](https://github.com/stlaz)) [SIG API Machinery,...

- [`KTIJ-26627`](https://youtrack.jetbrains.com/issue/KTIJ-26627) K2 IDE: False positive "Redundant qualifier" inspection on extension property called on object when other 'this' is present in scope
- [`KTIJ-23407`](https://youtrack.jetbrains.com/issue/KTIJ-23407) K2 IDE. False positive unused import directive for invoke function from object

* kubelets are no longer allowed to delete their own Node API object. Prior to 1.11, in rare circumstances related to cloudprovider node ID changes, kubelets would attempt to delete/recreate their Node object at startup. Kubelets older than 1.11 are not supported running against a v1.13+ API server. If an unsupported legacy kubelet encounters this situation, a cluster admin can remove the Node object: ([#71021](https://github.com/kubernetes/kubernetes/pull/71021), [@liggitt](htt...

* kubelets are no longer allowed to delete their own Node API object. Prior to 1.11, in rare circumstances related to cloudprovider node ID changes, kubelets would attempt to delete/recreate their Node object at startup. If a legacy kubelet encounters this situation, a cluster admin can remove the Node object: `kubectl delete node/<nodeName>` ([#62818](https://github.com/kubernetes/kubernetes/pull/62818), [@mikedanese](https://github.com/mikedanese))...

  remove unused rules immediately once they are no longer used.)

  (The threshold for "large" used here is currently "1000 endpoints" but
  this is subject to change.) ([#110334](https://github.com/kubernetes/kubernetes/pull/110334), [@danwinship](https://github.com/danwinship))

  - A namespaced object with an ownerReference referencing a uid of a namespaced kind which does not exist in the same namespace is now consistently treated as though that owner does not exist, and the child object is deleted.

- Kubectl describe namespace now shows Conditions (#106219, @dlipovetsky) [SIG CLI]

  - warn - perform server-side validation and warn on any invalid fields (but ultimately let the request succeed by dropping any invalid fields from the object). If validation is not available on the server, perform no validation.
  - false/ignore - perform no validation, silently dropping invalid fields from the object. ([#108350](https://github.com/kubernetes/kubernetes/pull/108350), [@kevindelgado](https://github.com/kevindelgado))

- Add scheduling support for RuntimeClasses....

* RBAC `v1beta1` RoleBinding/ClusterRoleBinding subjects changed `apiVersion` to `apiGroup` to fully-qualify a subject. ServiceAccount subjects default to an apiGroup of `""`, User and Group subjects default to an apiGroup of `"rbac.authorization.k8s.io"`. ([#41184](https://github.com/kubernetes/kubernetes/pull/41184), [@liggitt](https://github.com/liggitt))