- 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))

- The calculations for Pod topology spread skew now exclude nodes that
  don't match the node affinity/selector. This may lead to unschedulable pods if you previously had pods
  matching the spreading selector on those excluded nodes (not matching the node affinity/selector),
  especially when the `topologyKey` is not node-level. Revisit the node affinity and/or pod selector in the

- Fixes an issue with the max-in-flight API server filter where the filter could take a long time to process an incoming request if it had been a long time since the last request. ([#96282](https://github.com/kubernetes/kubernetes/pull/96282), [@staebler](https://github.com/staebler)) [SIG API Machinery]

  kubeadm no longer sets the node-mask automatically on IPv6 deployments, you must check that your IPv6 service subnet mask is compatible with the default node mask /64 or set it accordingly.

- kube-scheduler implemented scheduling hints for the `NodeUnschedulable` plugin. The scheduling hints allowed the scheduler to only retry scheduling a Pod that had been previously rejected by the `NodeSchedulable` plugin if a new Node or a Node update had set `.spec.unschedulable` to false.
   ([#122334](https://github.com/kubernetes/kubernetes/pull/122334), [@carlory](https://github.com/carlory))

* add shorthand cm for configmaps ([#29652](https://github.com/kubernetes/kubernetes/pull/29652), [@lojies](https://github.com/lojies))
* Bump cadvisor dependencies to latest head.  ([#29492](https://github.com/kubernetes/kubernetes/pull/29492), [@Random-Liu](https://github.com/Random-Liu))

now `NamespaceLifecycle,LimitRanger,ServiceAccount,PersistentVolumeLabel,DefaultStorageClass,DefaultTolerationSeconds,MutatingAdmissionWebhook,ValidatingAdmissionWebhook,ResourceQuota,StorageObjectInUseProtection`. Please note that if you previously had not set the `--admission-control` flag, your cluster behavior may change (to be more standard). ([#74610](https://github.com/kubernetes/kubernetes/pull/74610), [@oomichi](https://github.com/oomichi))



## Deprecations and Removals...

* DaemonSet ObservedGeneration ([#39157](https://github.com/kubernetes/kubernetes/pull/39157), [@lukaszo](https://github.com/lukaszo))
* The `--reconcile-cidr` kubelet flag was removed since it had been deprecated since v1.5 ([#39322](https://github.com/kubernetes/kubernetes/pull/39322), [@luxas](https://github.com/luxas))

  * Deployment was Alpha in 1.1 (though it had apiVersion extensions/v1beta1) and
was disabled by default. Due to some non-backward-compatible API changes, any
Deployment objects you created in 1.1 won’t work with in the 1.2 release.

### 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))