*   Added a new --etcd-upgrade keyword to kubeadm upgrade apply. When this keyword is specified, etcd's static pod gets upgraded to the etcd version officially recommended for a target kubernetes release. ([#55010](https://github.com/kubernetes/kubernetes/pull/55010),[ @sbezverk](https://github.com/sbezverk))

## What's New (Major Themes)

### Deprecation of PodSecurityPolicy

- In a future release, kubelet will no longer create the CSI NodePublishVolume target directory, in accordance with the CSI specification. CSI drivers may need to be updated accordingly to properly create and process the target path. ([#75535](https://github.com/kubernetes/kubernetes/issues/75535)) [SIG Storage]

#### kube-proxy:

* Prevent AWS Network Load Balancer security groups ingress rules to be deleted by ensuring target groups are tagged. ([#73594](https://github.com/kubernetes/kubernetes/pull/73594), [@masterzen](https://github.com/masterzen))

### Bug or Regression

- Cordoned nodes are now deregistered from AWS target groups. ([#85920](https://github.com/kubernetes/kubernetes/pull/85920), [@hoelzro](https://github.com/hoelzro)) [SIG Cloud Provider]

### Other (Cleanup or Flake)

* A performance issue was identified in large-scale clusters when deleting thousands of pods simultaneously across hundreds of nodes. Kubelets in this scenario can encounter temporarily increased latency of `delete pod` API calls -- above the target service level objective of 1 second. If you run clusters with this usage pattern and if pod deletion latency could be an issue for you, you might want to wait until the issue is resolved before you upgrade.

- CI job `ci-kubernetes-node-arm64-ubuntu-serial` will test node e2e on arm64, `use-dockerized-build` and `target-build-arch` are required to run this job. ([#118567](https://github.com/kubernetes/kubernetes/pull/118567), [@chendave](https://github.com/chendave))

## Changelog since v1.11.8

### Other notable changes

* Prevent AWS Network Load Balancer security groups ingress rules to be deleted by ensuring target groups are tagged. ([#73594](https://github.com/kubernetes/kubernetes/pull/73594), [@masterzen](https://github.com/masterzen))

* Fix panic in kubectl cp command ([#75037](https://github.com/kubernetes/kubernetes/pull/75037), [@soltysh](https://github.com/soltysh))
* Prevent AWS Network Load Balancer security groups ingress rules to be deleted by ensuring target groups are tagged. ([#73594](https://github.com/kubernetes/kubernetes/pull/73594), [@masterzen](https://github.com/masterzen))

### Other notable changes

* Test x509 intermediates correctly ([#34524](https://github.com/kubernetes/kubernetes/pull/34524), [@liggitt](https://github.com/liggitt))
* Remove headers that are unnecessary for proxy target ([#34076](https://github.com/kubernetes/kubernetes/pull/34076), [@mbohlool](https://github.com/mbohlool))



# v1.3.8