- 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))

- Fixed some missing white spaces in the flag descriptions and logs. ([#131562](https://github.com/kubernetes/kubernetes/pull/131562), [@logica0419](https://github.com/logica0419)) [SIG Network]

var s2 = s1                    // s2 stores the slice descriptor of s1
s1 = s1[:1]                    // s1's length is 1 but it still shares its underlying array with s2
s2[0] = 42                     // setting s2[0] changes s1[0] as well
fmt.Println(s1, s2)            // prints [42] [42 2 3]

var m1 = make(map[string]int)
var m2 = m1                    // m2 stores the map descriptor of m1

- `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))

- Fix a bug where kube-apiserver could emit an further watch even even if decryption failed for earlier event and it was not emitted. ([#131020](https://github.com/kubernetes/kubernetes/pull/131020), [@wojtek-t](https://github.com/wojtek-t)) [SIG API Machinery and Etcd]

- 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))