- The audit.k8s.io api group has been upgraded from v1beta1 to v1. ([#65891](https://github.com/kubernetes/kubernetes/pull/65891), [@CaoShuFeng](https://github.com/CaoShuFeng)) Courtesy of SIG API Machinery

* For Deployment, ReplicaSet, and DaemonSet, selectors are now immutable when updating via the new `apps/v1beta2` API. For backward compatibility, selectors can still be changed when updating via `apps/v1beta1` or `extensions/v1beta1`. ([#50719](https://github.com/kubernetes/kubernetes/pull/50719), [@crimsonfaith91](https://github.com/crimsonfaith91))

  - When registering with a 1.17+ API server, a CustomResourceDefinition conversion webhook can now request that only `v1` ConversionReview requests be sent to them. Previously, conversion webhooks were required to support receiving `v1beta1` ConversionReview requests as well for compatibility with API servers <= 1.15. ([#8...

  - All resources under `apps/v1beta1` and `apps/v1beta2` - use `apps/v1` instead
  - `daemonsets`, `deployments`, `replicasets` resources under `extensions/v1beta1` - use `apps/v1` instead
  - `networkpolicies` resources under `extensions/v1beta1` - use `networking.k8s.io/v1` instead

- Authentication.k8s.io/v1beta1 and authorization.k8s.io/v1beta1 are deprecated in 1.19 in favor of v1 levels and will be removed in 1.22 ([#90458](https://github.com/kubernetes/kubernetes/pull/90458), [@deads2k](https://github.com/deads2k)) [SIG API Machinery and Auth]

- The `node.status.volumes.attached.devicePath` field is deprecated for CSI volumes and will not be set in future releases ([#7...

- Kubeadm: remove the deprecated kubeadm API `v1beta1`. Introduce a new kubeadm API `v1beta3`. See [kubeadm/v1beta3](https://pkg.go.dev/k8s.io/kubernetes/cmd/kubeadm/app/apis/kubeadm/v1beta3) for a list of changes since `v1beta2`. Note that `v1beta2` is not yet deprecated, but will be in a future release. ([#101129](https://github.com/kubernetes/kubernetes/pull/101129), [@neolit123](https://github.com/neolit123))...

- Introduced API type `coordination.k8s.io/v1beta1/LeaseCandidate`
  `CoordinatedLeaderElection` feature moves to Beta ([#130751](https://github.com/kubernetes/kubernetes/pull/130751), [@Jefftree](https://github.com/Jefftree)) [SIG API Machinery, Etcd and Testing]

    - [Client Binaries](#client-binaries-10)
    - [Server Binaries](#server-binaries-10)
  - [Changelog since v1.5.0-beta.1](#changelog-since-v150-beta1)
    - [Other notable changes](#other-notable-changes-9)
- [v1.5.0-beta.1](#v150-beta1)
  - [Downloads for v1.5.0-beta.1](#downloads-for-v150-beta1)
    - [Client Binaries](#client-binaries-11)
    - [Server Binaries](#server-binaries-11)

- Introduced the `admissionregistration.k8s.io/v1beta1/MutatingAdmissionPolicy` API type. To enable, enable the `MutatingAdmissionPolicy` feature gate (which was off by default) and set `--runtime-config=admissionregistration.k8s.io/v1beta1=true` on the kube-apiserver.