- Optimized calculating stats when only CPU and Memory stats are returned from Kubelet stats/summary http endpoint.  ([#68841](https://github.com/kubernetes/kubernetes/pull/68841), [@krzysztof-jastrzebski](https://github.com/krzysztof-jastrzebski))

- Fixed graceful apiserver shutdown to not drop outgoing bytes before the process terminates. ([#72970](https://github.com/kubernetes/kubernetes/pull/72970), [@sttts](https://github.com/sttts))

### Apps

*   Fixed a bug where the `client-gen` tag for code-generator required a newline between a comment block and a statement.  tag shortcomings when newline is omitted ([#53893](https://github.com/kubernetes/kubernetes/pull/53893)) ([#55233](https://github.com/kubernetes/kubernetes/pull/55233),[ @sttts](https://github.com/sttts))

- If a pod has a running instance, the stats of its previously terminated instances will not show up in the kubelet summary stats any more for CRI runtimes such as containerd and cri-o. This keeps the behavior consistent with Docker integration, and fixes an issue that some container Prometheus metrics don't work when there are summary stats for multiple instances of the same pod. ([#77426](https://github.com/kubernetes/kubernetes/pull/77426),...

- Add `csi_operations_seconds` metric on kubelet that exposes CSI operations duration and status for node CSI operations. ([#98979](https://github.com/kubernetes/kubernetes/pull/98979), [@Jiawei022...

* Don't remove extended resource capacities that are not registered with kubelet from node status. ([#53353](https://github.com/kubernetes/kubernetes/pull/53353), [@jiayingz](https://github.com/jiayingz))

### Windows

  - The label reconciliation happens as part of periodic status update which can be configured via flag `--node-status-update-frequency` ([#104613](https://github.com/kubernetes/kubernetes/pull/104613), [@ravisantoshgudimetla](https://github.com/ravisantoshgudimetla)) [SIG Node, Testing and Windows]

- Fix endpoints status out-of-sync when the pod state changes rapidly ([#125675](https://github.com/kubernetes/kubernetes/pull/125675), [@tnqn](https://github.com/tnqn)) [SIG Apps, Network and Testing]
- For statically provisioned PVs, if its volume source is CSI type or it has migrated annotation, when it's deleted, the PersisentVolume controller won't changes its phase to the Failed state. 
  

## Before Upgrading

* When Response is a `metav1.Status`, it is no longer copied into the audit.Event status. Only the "status", "reason" and "code" fields are set.  For example, when we run `kubectl get pods abc`, the API Server returns a status object: