* RBAC: The system:kubelet-api-admin cluster role can be used to grant full access to the kubelet API  so integrators can grant this role to the --kubelet-client-certificate credential given to the apiserver. ([#57128](https://github.com/kubernetes/kubernetes/pull/57128), [@liggitt](https://github.com/liggitt))

- Introducing Memory quality of service support with `cgroups v2 (Alpha)`. The `MemoryQoS` feature is now in Alpha. This allows `kubelet` running with `cgroups v2` to set memory QoS at container, pod and QoS level to protect and guarantee better memory quality. This feature can be enabled through feature gate Memory QoS. ([#102970](https://github.com/kubernetes/kubernetes/pull/102970), [@borgerli](https://github.com/borgerli))

- Users will see increase in time for deletion of pods and also guarantee that removal of pod from api server  would mean deletion of all the resources from container runtime. ([#92817](https://github.com/kubernetes/kubernetes/pull/92817), [@kmala](https://github.com/kmala)) [SIG Node]

- Added a test to guarantee that conformance clusters require at least 2 untainted nodes. ([#106313](https://github.com/kubernetes/kubernetes/pull/106313), [@aojea](https://github.com/aojea))

* Fixed a race condition in k8s.io/client-go/tools/cache.SharedInformer that could violate the sequential delivery guarantee and cause panics on shutdown. ([#59828](https://github.com/kubernetes/kubernetes/pull/59828), [@krousey](https://github.com/krousey))

* Fix TestEventChannelFull random fail ([#76603](https://github.com/kubernetes/kubernetes/pull/76603), [@changyaowei](https://github.com/changyaowei))
* `aws-cloud-provider` service account in the `kube-system` namespace need to be granted with list node permission with this optimization ([#76976](https://github.com/kubernetes/kubernetes/pull/76976), [@zhan849](https://github.com/zhan849))

polling because there are variations on file changes (like symlink swapping of directories that contain the encryption config) that the file watch logic would fail to detect. Polling at a set interval prevents any such issues. Note that there is no guarantee on how quickly the API server will process the encryption config. The `apiserver_encryption_config_controller_automatic_reload_last_timestamp_seconds` metric must be used to determine when the new config becomes effective.([#121310](https://gith...

- Users will see increase in time for deletion of pods and also guarantee that removal of pod from api server  would mean deletion of all the resources from container runtime. ([#92817](https://github.com/kubernetes/kubernetes/pull/92817), [@kmala](https://github.com/kmala)) [SIG Node]

* Enable insertId generation, and update Stackdriver Logging Agent image to 0.5-1.5.36-1-k8s. This help reduce log duplication and guarantee log order. ([#68920](https://github.com/kubernetes/kubernetes/pull/68920), [@qingling128](https://github.com/qingling128))

* Fixed racy panics when using fake watches with ObjectTracker ([#61195](https://github.com/kubernetes/kubernetes/pull/61195), [@grantr](https://github.com/grantr))
* Fixed mounting of UNIX sockets(and other special files) in subpaths ([#61480](https://github.com/kubernetes/kubernetes/pull/61480), [@gnufscied](https://github.com/gnufied))