### Certificates
* The CertificateSigningRequest API added the `extra` field to persist all information about the requesting user. This mirrors the fields in the SubjectAccessReview API used to check authorization. ([#41755](https://github.com/kubernetes/kubernetes/pull/41755), [@liggitt](https://github.com/liggitt))

* Ignore mirror pods with RestartPolicy == Never in restart tests ([#34462](https://github.com/kubernetes/kubernetes/pull/34462), [@yujuhong](https://github.com/yujuhong))
* Change image-puller restart policy to OnFailure ([#37070](https://github.com/kubernetes/kubernetes/pull/37070), [@gmarek](https://github.com/gmarek))

- The endpointslice mirroring controller mirrors endpoints annotations and labels to the generated endpoint slices, it also ensures that updates on any of these fields on the endpoints are mirrored. 

- The endpointslice mirroring controller mirrors endpoints annotations and labels to the generated endpoint slices, it also ensures that updates on any of these fields on the endpoints are mirrored. 

- Significant kube-proxy performance improvements when using Endpoint Slices at scale. ([#83206](https://github.com/kubernetes/kubernetes/pull/83206), [@robscott](https://github.com/robscott))

### Node
- Mirror pods now include an ownerReference for the node that created them. ([#84485](https://github.com/kubernetes/kubernetes/pull/84485), [@tallclair](https://github.com/tallclair))

 - Static pods that reference API objects were denied admission by the kubelet so that static pods would not be silently running even after the mirror pod creation failed. ([#131837](https://github.com/kubernetes/kubernetes/pull/131837), [@sreeram-venkitesh](https://github.com/sreeram-venkitesh)) [SIG Auth, Node and Testing]

* [GCE] Apiserver uses `InternalIP` as the most preferred kubelet address type by default. ([#59019](https://github.com/kubernetes/kubernetes/pull/59019), [@MrHohn](https://github.com/MrHohn))
* Updated priority of mirror pod according to PriorityClassName. ([#58485](https://github.com/kubernetes/kubernetes/pull/58485), [@k82cn](https://github.com/k82cn))

* Fixes a bug where kubelet crashes trying to free memory under memory pressure ([#58574](https://github.com/kubernetes/kubernetes/pull/58574), [@yastij](https://github.com/yastij))
* Updated priority of mirror pod according to PriorityClassName. ([#58485](https://github.com/kubernetes/kubernetes/pull/58485), [@k82cn](https://github.com/k82cn))

- Setting a mirror pod's phase to Succeeded or Failed can prevent the corresponding static pod from restarting due mutation of a Kubelet cache. ([#116482](https://github.com/kubernetes/kubernetes/pull/116482), [@smarterclayton](https://github.com/smarterclayton)) [SIG...

- Fixed sample-cli-plugin help text to be consistent and always use `kubectl ns`. ([#125641](https://github.com/kubernetes/kubernetes/pull/125641), [@nirs](https://github.com/nirs))