* Add PriorityClass API object under new "scheduling" API group ([#48377](https://github.com/kubernetes/kubernetes/pull/48377), [@bsalamat](https://github.com/bsalamat))
* Added golint check for pkg/kubelet. ([#47316](https://github.com/kubernetes/kubernetes/pull/47316), [@k82cn](https://github.com/k82cn))

- `KMSv1` is deprecated and will only receive security updates going forward. Use `KMSv2` instead. In a future release, Set `--feature-gates=KMSv1=true` to use the deprecated KMSv1 feature. ([#119007](https://github.com/kubernetes/kubernetes/pull/119007), [@aramase](https://github.com/aramase))

deployed using the `federation/deploy/deploy.sh` script. This script does not depend on any of the development environment shell library/scripts. This is an alternative to the current `federation-up.sh`/`federation-down.sh` scripts. Both the scripts are going to co-exist in this release, but the `federation-up.sh`/`federation-down.sh` scripts might be removed in a future release in favor of `federation/deploy/deploy.sh` script. ([#30744](https://github.com/kubernetes/kubernetes/pull/30744), [@madhusuda...

deployed using the `federation/deploy/deploy.sh` script. This script does not depend on any of the development environment shell library/scripts. This is an alternative to the current `federation-up.sh`/`federation-down.sh` scripts. Both the scripts are going to co-exist in this release, but the `federation-up.sh`/`federation-down.sh` scripts might be removed in a future release in favor of `federation/deploy/deploy.sh` script. ([#30744](https://github.com/kubernetes/kubernetes/pull/30744), [@madhusuda...

 ([#64792](https://github.com/kubernetes/kubernetes/pull/64792), [@luxas](https://github.com/luxas))

* Added new flag to `kubeadm join`: --node-name, that lets you specify the name of the Node object that's gonna be created ([#48538](https://github.com/kubernetes/kubernetes/pull/48538), [@GheRivero](https://github.com/GheRivero))

  * deleteOptions.orphanDependents is going to be deprecated in 1.7. Please use deleteOptions.propagationPolicy instead.

### kubeadm

Kubernetes images. The old registry (`k8s.gcr.io`) will continue to be supported for the foreseeable future, but the new name should perform better because it frontends equivalent mirrors in other clouds.  Please point your clusters to the new registry going forward. \n\nAdmission/Policy integrations that have an allowlist of registries need to include `registry.k8s.io` alongside `k8s.gcr.io`.\nAir-gapped environments and image garbage-collection configurations will need to update to pre-pull and preserve...

### Windows

Support for Windows nodes and Windows containers went going stable.

* Support for passing unknown provider names to the E2E test binaries is going to be deprecated. Use `--provider=skeleton` (no ssh access) or `--provider=local` (local cluster with ssh) instead. ([#70141](https://github.com/kubernetes/kubernetes/pull/70141), [@pohly](https://github.com/pohly))