- Kubeadm does not set the deprecated '--cgroup-driver' flag in /var/lib/kubelet/kubeadm-flags.env, it will be set in the kubelet config.yaml. If you have this flag in /var/lib/kubelet/kubeadm-flags.env...

- Contextual logging is now in beta and enabled by default. Check out the [KEP](https://github.com/kubernetes/enhancements/issues/3077) and [official documentation](https://kubernetes.io/docs/concepts/cluster-administratio...

- --redirect-container-streaming is no longer functional. The flag will be removed in v1.22 ([#95935](https://github.com/kubernetes/kubernetes/pull/95935), [@tallclair](https://github.com/tallclair)) [SIG Node]

  Stop including the `pod-security.kubernetes.io/exempt=namespace` audit annotation on namespace requests. ([#109680](https://github.com/kubernetes/kubernetes/pull/109680), [@tallclair](https://github.com/tallclair))

- 'Pod Security admission: the pod-security `warn` level will now default to
  the `enforce` level.'
   ([#113491](https://github.com/kubernetes/kubernetes/pull/113491), [@tallclair](https://github.com/tallclair))
- 'Promoted the `APIServerIdentity` feature to Beta. By default, each `kube-apiserver`
  will now create a Lease in the `kube-system` namespace. These lease objects can

- SPDY transport in client-go will no longer follow redirects. ([#108531](https://github.com/kubernetes/kubernetes/pull/108531), [@tallclair](https://github.com/tallclair))

* Fix kube-proxy PodSecurityPolicy binding on GCE & GKE. This was only an issue when running kube-proxy as a DaemonSet, with PodSecurityPolicy enabled. ([#72761](https://github.com/kubernetes/kubernetes/pull/72761), [@tallclair](https://github.com/tallclair))
* Scheduler only activates unschedulable pods if node's scheduling related properties change. ([#71551](https://github.com/kubernetes/kubernetes/pull/71551), [@mlmhl](https://github.com/mlmhl))