- [beta] PodDisruptionBudget has been promoted to beta, can be used to safely drain nodes while respecting application SLO's ([docs](http://kubernetes.io/docs/tasks/administer-cluster/safely-drain-node/)) ([kubernetes/features#85](https://github.com/kubernetes/enhancements/issues/85))
- **UI**

- The new flag `--chunk-size=SIZE` for `kubectl drain` has been promoted to beta, and enabled by default. This flag  may be used to alter the number of items or disable this feature when `0` is passed. ([#100148](https://github.com/kubernetes/kubernetes/pull/100148), [@KnVerey](https://github.com/KnVerey))...

- Remove deprecated and not supported old cronjob controller. ([#106126](https://github.com/kubernetes/kubernetes/pull/106126), [@soltysh](https://github.com/soltysh)) [SIG Apps]
- Remove ignore error flag for drain, and set this feature as default ([#105571](https://github.com/kubernetes/kubernetes/pull/105571), [@yuzhiquan](https://github.com/yuzhiquan)) [SIG CLI]

- Fixes code generation for non-namespaced create subresources fake client test. ([#96586](https://github.com/kubernetes/kubernetes/pull/96586), [@Doude](https://github.com/Doude)) [SIG API Machinery]
- Fixes high CPU usage in kubectl drain ([#95260](https://github.com/kubernetes/kubernetes/pull/95260), [@amandahla](https://github.com/amandahla)) [SIG CLI]

- Fixes high CPU usage in kubectl drain ([#95260](https://github.com/kubernetes/kubernetes/pull/95260), [@amandahla](https://github.com/amandahla)) [SIG CLI]

- github.com/benbjohnson/clock: [v1.1.0](https://github.com/benbjohnson/clock/tree/v1.1.0)
- github.com/danwinship/knftables: [v0.0.13](https://github.com/danwinship/knftables/tree/v0.0.13)
- github.com/dnaeon/go-vcr: [v1.2.0](https://github.com/dnaeon/go-vcr/tree/v1.2.0)
- github.com/dougm/pretty: [2ee9d74](https://github.com/dougm/pretty/tree/2ee9d74)
- github.com/gofrs/uuid: [v4.4.0+incompatible](https://github.com/gofrs/uuid/tree/v4.4.0)

### Node Components
* **Kubelet with the Docker-CRI implementation**
  * The Docker-CRI implementation is enabled by default.
  * It is not compatible with containers created by older Kubelets. It is
    recommended to drain your node before upgrade. If you choose to perform
    an in-place upgrade, the Kubelet will automatically restart all
    Kubernetes-managed containers on the node.

* GCE: Prefer preconfigured node tags for firewalls, if available ([#25148](https://github.com/kubernetes/kubernetes/pull/25148), [@a-robinson](https://github.com/a-robinson))
* Drain pods created from ReplicaSets in 'kubectl drain' ([#23689](https://github.com/kubernetes/kubernetes/pull/23689), [@maclof](https://github.com/maclof))

* Make etcd cache size configurable ([#23914](https://github.com/kubernetes/kubernetes/pull/23914), [@jsravn](https://github.com/jsravn))
* Drain pods created from ReplicaSets in 'kubectl drain' ([#23689](https://github.com/kubernetes/kubernetes/pull/23689), [@maclof](https://github.com/maclof))

- Added `kubectl node drain` helper callbacks `OnPodDeletionOrEvictionStarted`
  and `OnPodDeletionOrEvictionFailed`; people extending `kubectl` can use these
  new callbacks for more granularity. Deprecated the `OnPodDeletedOrEvicted`