- Update description of `--audit-log-maxbackup` to describe behavior when `value = 0`. ([#103843](https://github.com/kubernetes/kubernetes/pull/103843), [@Arkessler](https://github.com/Arkessler))

- Add support for writing out of tree custom scheduler plugins. ([#78162](https://github.com/kubernetes/kubernetes/pull/78162), [@hex108](https://github.com/hex108))

### Storage

- Fix possible file descriptor leak and closing of dirs in `doSafeMakeDir` ([#79534](https://github.com/kubernetes/kubernetes/pull/79534), [@odinuge](https://github.com/odinuge))

- kubeadm now includes the ability to specify certificate encryption and decryption keys for the upload and download certificate phases as part of the new v1beta2 kubeadm config format. ([#77012](https://github.com/kubernetes/kubernetes/pull/77012), [@rosti](https://github.com/rosti))

* Fluentd-gcp DaemonSet exposes different set of metrics. ([#48812](https://github.com/kubernetes/kubernetes/pull/48812), [@crassirostris](https://github.com/crassirostris))
* Fixed OpenAPI Description and Nickname of API objects with subresources ([#49357](https://github.com/kubernetes/kubernetes/pull/49357), [@mbohlool](https://github.com/mbohlool))

- `kubelet` now exposes latency metrics of different stages of the node startup. ([#118568](https://github.com/kubernetes/kubernetes/pull/118568), [@qiutongs](https://github.com/qiutongs))

### Documentation

- Added descriptions and examples for the situation of using `kubectl rollout restart` without specifying a particular deployment. ([#120118](https://github.com/kubernetes/kubernetes/pull/120118), [@Ithrael](https://github.com/Ithrael))

- Kubectl shell completions for the bash shell now include descriptions. ([#113636](https://github.com/kubernetes/kubernetes/pull/113636), [@marckhouzam](https://github.com/marckhouzam))