- Fix API comment for the Job Ready field in status ([#121765](https://github.com/kubernetes/kubernetes/pull/121765), [@mimowo](https://github.com/mimowo)) [SIG API Machinery and Apps]
- Fix API comments for the FailIndex Job pod failure policy action. ([#121764](https://github.com/kubernetes/kubernetes/pull/121764), [@mimowo](https://github.com/mimowo)) [SIG API Machinery and Apps]

### Feature

- The node.k8s.io/v1alpha1 RuntimeClass API is no longer served. Use the node.k8s.io/v1 API version, available since v1.20 ([#103061](https://github.com/kubernetes/kubernetes/pull/103061), [@SergeyKanzhelev](https://github.com/SergeyKanzhelev)) [SIG API Machinery, CLI, Node and Testing]

### API Change

- Add 2 new options for kube-proxy running in winkernel mode. 

  - [Notable Features](#notable-features)
    - [Stable](#stable)
    - [Beta](#beta)
    - [CLI Improvements](#cli-improvements)
  - [API Changes](#api-changes)
  - [Other notable changes](#other-notable-changes-1)
    - [API Machinery](#api-machinery)
    - [Apps](#apps)
    - [Auth](#auth)
    - [CLI](#cli)
    - [Cloud Provider](#cloud-provider)
    - [Cluster Lifecycle](#cluster-lifecycle-1)

  - [Deprecations](#deprecations)
    - [**API Machinery**](#api-machinery-2)
    - [**Auth**](#auth-2)
    - [**Cluster Lifecycle**](#cluster-lifecycle-2)
    - [**Network**](#network-2)
    - [**Storage**](#storage-2)
    - [**Scheduling**](#scheduling-1)
    - [**Node**](#node-2)
  - [Notable Changes](#notable-changes)
    - [**Workloads API (apps/v1)**](#workloads-api-appsv1)
    - [**API Machinery**](#api-machinery-3)

  // +optional
  optional int32 mode = 4;
}

// DownwardAPIVolumeSource represents a volume containing downward API info.
// Downward API volumes support ownership management and SELinux relabeling.
message DownwardAPIVolumeSource {
  // Items is a list of downward API volume file
  // +optional
  repeated DownwardAPIVolumeFile items = 1;

* kube-apiserver now includes all registered API groups in discovery, including registered extension API group/versions for unavailable extension API servers. ([#66932](https://github.com/kubernetes/kubernetes/pull/66932), [@nilebox](https://github.com/nilebox))

    - [Taints and Tolerations](#taints-and-tolerations)
    - [Volumes](#volumes-2)
  - [Changes to Major Components](#changes-to-major-components)
    - [API Server](#api-server)
    - [API Server Aggregator](#api-server-aggregator)
      - [Generic API Server](#generic-api-server)
    - [Client](#client)
      - [client-go](#client-go)
    - [Cloud Provider](#cloud-provider)
      - [AWS](#aws)
      - [Azure](#azure)

ubernetes/kubernetes/pull/58968), [@deads2k](https://github.com/deads2k))

* The `PodSecurityPolicy` API has been moved to the `policy/v1beta1` API group. The `PodSecurityPolicy` API in the `extensions/v1beta1` API group is deprecated and will be removed in a future release. Authorizations for using pod security policy resources should change to reference the `policy` API group after upgrading to 1.11. ([#54933](https://github.com/kubernetes/kubernetes/pull/54933), [@php-coder](https...

can be aggregated (served along with) the rest of the Kubernetes API. See [Extending the Kubernetes API with the aggregation layer](https://kubernetes.io/docs/concepts/api-extension/apiserver-aggregation/), [Configure the aggregation layer](https://kubernetes.io/docs/tasks/access-kubernetes-api/configure-aggregation-layer/), and [Setup an extension API server](https://kubernetes.io/docs/tasks/access-kubernetes-api/setup-extension-api-server/).

* [alpha] Adding admissionregistration API...

* kube-apiserver now includes all registered API groups in discovery, including registered extension API group/versions for unavailable extension API servers. ([#66932](https://github.com/kubernetes/kubernetes/pull/66932), [@nilebox](https://github.com/nilebox))