### Feature

- (beta feature) If the CSI driver supports the NodeServiceCapability `VOLUME_MOUNT_GROUP` and the `DelegateFSGroupToCSIDriver` feature gate is enabled, kubelet will delegate applying FSGroup to the driver by passing it to NodeStageVolume and NodePublishVolume, regardless of what other FSGroup policies are set. ([#106330](https://github.com/kubernetes/kubernetes/pull/106330), [@verult](https://github.com/verult)) [SIG Storage]

- Kubeadm: make sure that `kubeadm init/join` always use a URL scheme (unix:// on Linux and npipe:// on Windows) when passing a value to the `--container-runtime-endpoint` kubelet flag. This flag's value is taken from the kubeadm configuration `criSocket` field or the `--cri-socket` CLI flag. Automatically add a missing URL scheme to the user configuration in memory, but...

- Kubeadm: fix misleading warning about passing control-plane related flags on 'kubeadm join' ([#89596](https://github.com/kubernetes/kubernetes/pull/89596), [@neolit123](https://github.com/neolit123)) [SIG Cluster Lifecycle]

* Running `kubectl taint` (alpha in 1.5) against a 1.5 server requires a kubectl version of 1.5
* Running `kubectl create secret` no longer accepts passing multiple values to a single --from-literal flag using comma separation
  * Update command invocations to pass separate --from-literal flags for each value

### RBAC

- Graduated HorizontalPodAutoscaler support for per-container metrics to stable. ([#123482](https://github.com/kubernetes/kubernetes/pull/123482), [@sanposhiho](https://github.com/sanposhiho))

#### Extensibility

- The community has been asking for continuing support of extensibility, so this cycle features more work around CRDs and API Machinery. Most of the enhancements in this cycle were from SIG API Machinery and related areas.

([#45003](https://github.com/kubernetes/kubernetes/pull/45003), [@krmayankk](https://github.com/krmayankk))

* Deployments are updated to use (1) a more stable hashing algorithm (fnv) than the previous one (adler) and (2) a hashing collision avoidance mechanism that will ensure new rollouts will not block on hashing collisions anymore. ([#44774](https://github.com/kubernetes/kubernetes/pull/44774), [@kargakis](https://github.com/kargakis))([kubernetes/features#287](https://github.com/...

- The `horizontalpodautoscaling` and `clusterrole-aggregation` controllers now assume the `autoscaling/v1` and `rbac.authorization.k8s.io/v1` APIs are available. If you disable those APIs and do not want to run those controllers, exclude them by passing `--controllers=-horizontalpodautoscaling` or `--controllers=-clusterrole-aggregation` to `kube-controller-manager`. ([#117977](https://github.com/kubernetes/kubernetes/pull/117977), [@liggitt](https://github.com/liggitt)) [SIG API Machinery and Cloud...

- Fixed an EndpointSlice Controller hashing bug that could cause EndpointSlices to incorrectly handle Pods with duplicate IP addresses. For example this could happen when a new Pod reused an IP that was also assigned to a Pod in a completed state. ([#115907](https://github.com/kubernetes/k...