- Kubeadm: fix an issue with the kube-proxy container env. variables ([#84888](https://github.com/kubernetes/kubernetes/pull/84888), [@neolit123](https://github.com/neolit123))
- Utilize diagnostics tool to dump GKE windows test logs ([#83517](https://github.com/kubernetes/kubernetes/pull/83517), [@YangLu1031](https://github.com/YangLu1031))

### Scheduling

This method of monitoring consumption, which is currently available only for `emptyDir` volumes, is faster and more accurate than the old method of walking the filesystem tree. Note that it does not enforce limits, it only monitors consumption. To utilize this functionality, set the feature gate `LocalStorageCapacityIsolationFSQuotaMonitoring=true`. For ext4fs filesystems, create the filesystem with `mkfs.ext4 -O project <block_device>` and run `tune2fs -Q prjquota `block device`; XFS filesystems need...

- A new /resize subresource was added to request pod resource resizing. Update your k8s client code to utilize the /resize subresource for Pod resizing operations. ([#128266](https://github.com/kubernetes/kubernetes/pull/128266), [@AnishShah](https://github.com/AnishShah)) [SIG API Machinery, Apps, Node and Testing]

  This feature is in alpha. ([#122887](https://github.com/kubernetes/kubernetes/pull/122887), [@jpbetz](https://github.com/jpbetz))
- `ValidatingAdmissionPolicy` now supports type checking policies that utilize variables. ([#123083](https://github.com/kubernetes/kubernetes/pull/123083), [@jiahuif](https://github.com/jiahuif))

### Documentation

* kubelet exports metrics for cgroup management ([#41988](https://github.com/kubernetes/kubernetes/pull/41988), [@sjenning](https://github.com/sjenning))
* Experimental support to reserve a pod's memory request from being utilized by
  pods in lower QoS tiers.
  ([#41149](https://github.com/kubernetes/kubernetes/pull/41149),
  [@sjenning](https://github.com/sjenning))
* Port forwarding can forward over websockets or SPDY.

- More fields are allowed at the root of the CRD validation schema when the status subresource is enabled. ([#65357](https://github.com/kubernetes/kubernetes/pull/65357), [@nikhita](https://github.com/nikhita))
- api-machinery utility functions `SetTransportDefaults` and `DialerFor` once again respect custom Dial functions set on transports ([#65547](https://github.com/kubernetes/kubernetes/pull/65547), [@liggitt](https://github.com/liggitt))

* Fix GCE etcd scripts to pass in all required parameters for the etcd migration utility to correctly perform HA upgrades and downgrades ([#61957](https://github.com/kubernetes/kubernetes/pull/61957), [@jpbetz](https://github.com/jpbetz))

* Fix GCE etcd scripts to pass in all required parameters for the etcd migration utility to correctly perform HA upgrades and downgrades ([#61956](https://github.com/kubernetes/kubernetes/pull/61956), [@jpbetz](https://github.com/jpbetz))