- Removed container name from messages for container created and started events. ([#134043](https://github.com/kubernetes/kubernetes/pull/134043), [@HirazawaUi](https://github.com/HirazawaUi))
- Removed deprecated gogo protocol definitions from `k8s.io/kubelet/pkg/apis/dra` in favor of `google.golang.org/protobuf`. ([#133026](https://github.com/kubernetes/kubernetes/pull/133026), [@saschagrunert](https://github.com/saschagrunert)) [SIG API Machinery and Node]

func f[P any]() {
	type A = P  // ok: T is a type parameter declared by the enclosing function
}
</pre>

<h4 id="Type_definitions">Type definitions</h4>

<p>
A type definition creates a new, distinct type with the same
<a href="#Underlying_types">underlying type</a> and operations as the given type
and binds an identifier, the <i>type name</i>, to it.
</p>

Shinsuke Sugaya <******@****.***> 1379249320 +0900

* CustomResourceDefinitions: OpenAPI v3 validation schemas containing `$ref`references are no longer permitted. Before upgrading, ensure CRD definitions do not include those `$ref` fields. ([#58438](https://github.com/kubernetes/kubernetes/pull/58438), [@carlory](https://github.com/carlory))

- Restores compatibility with <=1.15.x custom resources by not publishing OpenAPI for non-structural custom resource definitions ([#82653](https://github.com/kubernetes/kubernetes/pull/82653), [@liggitt](https://github.com/liggitt))

  - The OpenAPI definitions with the prefix "io.k8s.kubernetes.pkg" (deprecated since 1.9) have been removed. ([#74596](https://github.com/kubernetes/kubernetes/pull/74596), [@sttts](https://github.com/sttts))

- Ingress:
  - `spec.ingressClassName` replaces the deprecated `kubernetes.io/ingress.class` annotation, and allows associating an Ingress object with a particular controller.

- OpenAPI definitions served by kube-apiserver now include enum types by default. ([#108898](https://github.com/kubernetes/kubernetes/pull/108898), [@jiahuif](https://github.com/jiahuif))

- `kubectl rollout restart` now works for DaemonSets and StatefulSets. ([#77423](https://github.com/kubernetes/kubernetes/pull/77423), [@apelisse](https://github.com/apelisse))
- `kubectl get --watch=true` now prints custom resource definitions with custom print columns. ([#76161](https://github.com/kubernetes/kubernetes/pull/76161), [@liggitt](https://github.com/liggitt))

- API paging is now enabled for custom resource definitions, custom resources and APIService objects. ([#67861](https://github.com/kubernetes/kubernetes/pull/67861), [@liggitt](https://github.com/liggitt))