* You can now resize PersistentVolumes without taking them offline ([ref](https://github.com/kubernetes/enhancements/issues/531))
* You can now set a maximum volume count ([ref](https://github.com/kubernetes/enhancements/issues/554))
* You can now do environment variable expansion in a subpath mount. ([ref](https://github.com/kubernetes/enhancements/issues/559))

### Storage

- ResourceQuota now counts device class requests within a ResourceClaim object as consuming two additional quotas when the DRAExtendedResource feature is enabled:
  - `requests.deviceclass.resource.k8s.io/<deviceclass>` with a quantity equal to the worst case count of devices requested

- Kube-apiserver metrics will now include request counts, latencies, and response sizes for /healthz, /livez, and /readyz requests. ([#83598](https://github.com/kubernetes/kubernetes/pull/83598), [@jktomer](https://github.com/jktomer)) [SIG API Machinery]

- Fixed scanning of failed iSCSI targets. ([#74306](https://github.com/kubernetes/kubernetes/pull/74306), [@jsafrane](https://github.com/jsafrane))
- StorageOS volume plugin updated to fix an issue where volume mount succeeds even if request to mount via StorageOS API fails. ([#69782](https://github.com/kubernetes/kubernetes/pull/69782), [@darkowlzz](https://github.com/darkowlzz))

    * --alpha-endpoint-reconciler-type=(master-count, lease, none) (default
    * "master-count"). The original reconciler is 'master-count'. The 'lease'
    * reconciler uses the storageapi and a TTL to keep alive an endpoint within the
    * `kube-apiserver-endpoint` storage namespace. The 'none' reconciler is a noop

- Fix: azure file mount timeout issue ([#88610](https://github.com/kubernetes/kubernetes/pull/88610), [@andyzhangx](https://github.com/andyzhangx)) [SIG Cloud Provider and Storage]
- Fix: corrupted mount point in csi driver ([#88569](https://github.com/kubernetes/kubernetes/pull/88569), [@andyzhangx](https://github.com/andyzhangx)) [SIG Storage]

- Added `get-users` and `delete-user` to the `kubectl config` subcommand ([#89840](https://github.com/kubernetes/kubernetes/pull/89840), [@eddiezane](https://github.com/eddiezane)) [SIG CLI]

implementation is changed to not return an error when the specified target can be detected as not a mount point. On Linux, the behavior of detecting a mount point depends on `umount` command is validated when the mounter is created. Additionally, mount point checks will be skipped in CleanupMountPoint/CleanupMountWithForce if the mounter's Unmount having the changed behavior of not returning error when target is not a mount point. ([#109676](https://github.com/kubernetes/kubernetes/pull/109676), [@cartermckin...

- Object count quota is now supported for namespaced custom resources using the `count/<resource>.<group>` syntax. ([#72384](https://github.com/kubernetes/kubernetes/pull/72384), [@zhouhaibing089](https://github.com/zhouhaibing089))