The cri-tools project, which aims to provide consistent tooling for operators to debug and introspect their nodes in production independent of their chosen container runtime, graduated to GA.

* Fixes an issue with APIService auto-registration affecting rolling HA apiserver restarts that add or remove API groups being served. ([#51921](https://github.com/kubernetes/kubernetes/pull/51921), [@liggitt](https://github.com/liggitt))

  For more information, see [#56348](https://github.com/kubernetes/kubernetes/issues/56348).

*   API server times out after performing a rolling update of the etcd cluster. This issue will be fixed in a future release.

  For more information, see [#47131](https://github.com/kubernetes/kubernetes/issues/47131)

- CoreDNS adds readinessProbe which prevents loadbalancing to unready pods, and also allows rolling updates to work as expected. ([#74137](https://github.com/kubernetes/kubernetes/pull/74137), [@rajansandeep](https://github.com/rajansandeep))

- Revised the logic for DaemonSet rolling update to exclude nodes if scheduling constraints are not met.

An alternative implementation of the `CronJob` controller is now available as an alpha feature in this release, which has experimental performance improvement by using informers instead of polling. While this will be the default behavior in the future, you can [try them in this release through a feature gate](https://docs.k8s.io/concepts/workloads/controllers/cron-jobs/).

### PID Limits graduates to General Availability

- Revised the logic for DaemonSet rolling update to exclude nodes if scheduling constraints are not met.

- kubelet + DRA: For DRA driver plugins (and only for those!), the kubelet now supports a rolling update with `maxSurge > 0` in the driver's DaemonSet. A DRA driver must support this, which can be done via the k8s.io/dynamic-resource-allocation/kubeletplugin helper package. ([#129832](https://github.com/kubernetes/kubernetes/pull/129832), [@p...

### Apps

- Fix a bug that pods not be deleted from unmatched nodes by daemon controller ([#78974](https://github.com/kubernetes/kubernetes/pull/78974), [@DaiHao](https://github.com/DaiHao))
- Fix a bug that causes DaemonSet rolling update hang when there exist failed pods. ([#78170](https://github.com/kubernetes/kubernetes/pull/78170), [@DaiHao](https://github.com/DaiHao))

### Auth

- DaemonSets accept a MaxSurge integer or percent on their rolling update strategy that will launch the updated pod on nodes and wait for those pods to go ready before marking the old out-of-date pods as deleted. This allows workloads to avoid downtime during upgrades when deployed using DaemonSets. This feature...