* Add per-pod scheduling metrics across 1 or more schedule attempts. ([#83674](https://github.com/kubernetes/kubernetes/pull/83674), [@liu-cong](https://github.com/liu-cong))
* Fix validation message to mention bytes, not characters. ([#80880](https://github.com/kubernetes/kubernetes/pull/80880), [@DirectXMan12](https://github.com/DirectXMan12))

* fix --save-config in create subcommand ([#40289](https://github.com/kubernetes/kubernetes/pull/40289), [@xilabao](https://github.com/xilabao))
* We should mention the caveats of in-place upgrade in release note. ([#40727](https://github.com/kubernetes/kubernetes/pull/40727), [@Random-Liu](https://github.com/Random-Liu))

- Kube-apiserver --help flag help is now printed in sections. ([#64517](https://github.com/kubernetes/kubernetes/pull/64517), [@sttts](https://github.com/sttts))

- Mount-utils: Detect potential stale file handle ([#106988](https://github.com/kubernetes/kubernetes/pull/106988), [@andyzhangx](https://github.com/andyzhangx)) [SIG Storage]
- The feature gate was mentioned as `csiMigrationRBD` where it should have been `CSIMigrationRBD` to be in parity with other migration plugins. This release correct the same and keep it as `CSIMigrationRBD`.
  

### Bug or Regression

- Fixed in-tree to CSI migration for Portworx volumes, in clusters where Portworx security feature is enabled (it's a Portworx feature, not Kubernetes feature). It required secret data from the secret mentioned in-tree SC, to be passed in CSI requests which was not happening before this fix. ([#129674](https://github.com/kubernetes/kubernetes/pull/129674), [@gohilankit](https://github.com/gohilankit)) [SIG Storage]

This section provides an overview of deprecated API versions, options, flags, and arguments. Deprecated means that we intend to remove the capability from a future release. After removal, the capability will no longer work. The sections are organized by SIGs.

### **API Machinery**

- The feature gate was mentioned as `csiMigrationRBD` where it should have been `CSIMigrationRBD` to be in parity with other migration plugins. This release correct the same and keep it as `CSIMigrationRBD`.

- Fixed in-tree to CSI migration for Portworx volumes, in clusters where Portworx security feature is enabled (it's a Portworx feature, not Kubernetes feature). It required secret data from the secret mentioned in-tree SC, to be passed in CSI requests which was not happening before this fix. ([#129675](https://github.com/kubernetes/kubernetes/pull/129675), [@gohilankit](https://github.com/gohilankit)) [SIG Storage]

### Removing deprecated flags in kubeadm

`kubeadm` applies a number of deprecations and removals of deprecated features in this release. More details are available in the Urgent Upgrade Notes and Kind / Deprecation sections.

### Pod Hostname as FQDN graduates to Beta

- No actions required. This is a small enhancement to a utility library. ([#92440](https://github.com/kubernetes/kubernetes/pull/92440), [@luigibk](https://github.com/luigibk)) [SIG Network]
- PodTolerationRestriction: Mention Whitelist Scope in Error ([#87582](https://github.com/kubernetes/kubernetes/pull/87582), [@mrueg](https://github.com/mrueg)) [SIG Scheduling]