- Recording timing traces had a race condition. Impact in practice was probably low. ([#117139](https://github.com/kubernetes/kubernetes/pull/117139), [@pohly](https://github.com/pohly)) [SIG API Machinery, Architecture, Auth, CLI, Cloud Provider, Cluster Lifecycle, Instrumentation,...

### Failing Test

- Added mock framework support for unit tests for Windows in `kubeproxy`. ([#120105](https://github.com/kubernetes/kubernetes/pull/120105), [@princepereira](https://github.com/princepereira))

reclaim policy has been deprecated. Users should use dynamic provisioning instead. ([#59063](https://github.com/kubernetes/kubernetes/pull/59063), [@ayushpateria](https://github.com/ayushpateria))

* kube-apiserver flag --tls-ca-file has had no effect for some time.  It is now deprecated and slated for removal in 1.11.  If you are specifying this flag, you must remove it from your launch config before upgrading to 1.11. ([#58968](https://github.com/kubernetes/kubernetes/pull/58968), [@...

* scheduler: Fix issue were a new pod with affinity gets stuck at `creating` because the node had been deleted but the pod still exists. ([#56835](https://github.com/kubernetes/kubernetes/pull/56835), [@wenlxie](https://github.com/wenlxie))

- Fixes a bug that could result in the EndpointSlice controller unnecessarily updating EndpointSlices associated with a Service that had Topology Aware Hints enabled. ([#105267](https://github.com/kubernetes/kubernetes/pull/105267), [@llhuii](https://github.com/llhuii))

### Other (Cleanup or Flake)

- 'Promoted `cronjob_job_creation_skew` metric to stable to follow the cronjob v2 controller,
  the following metrics had their name updated to match metrics API guidelines:

	In Namespaces that previously did not have the "DefaultDeny" annotation, you should delete any existing NetworkPolicy objects. These had no effect in the v1beta1 API, but with v1 semantics they might cause some traffic to be unintentionally blocked.


### Storage

    * Action required: Before upgrading your Kubernetes clusters, double check if you had configured webhooks for cluster-scoped objects (e.g., nodes, persistentVolume), these webhooks will start to take effect. Delete/modify the configs if that's not desirable.

### Other notable changes

### Kustomize Updates in Kubectl

[Kustomize](https://github.com/kubernetes-sigs/kustomize) version in kubectl had a jump from v2.0.3 to [v4.0.5](https://github.com/kubernetes/kubernetes/pull/98946). Kustomize is now treated as a library and future updates will be less sporadic.

### Default Container Annotation

- Kubeadm: remove the deprecated flag `--insecure-port` from the kube-apiserver manifest that kubeadm manages. The flag had no effect since 1.20, since the insecure serving of the component was disabled in the same version. ([#102121](https://github.com/kubernetes/kubernetes/pull/102121), [@pacoxu](https://github.com/pacoxu))