supports pod priority and creation of PriorityClasses ([user doc](https://kubernetes.io/docs/concepts/configuration/pod-priority-preemption/))([design doc](https://github.com/kubernetes/community/blob/master/contributors/design-proposals/scheduling/pod-priority-api.md))

* [alpha] This version now supports priority-based preemption of pods ([user doc](https://kubernetes.io/docs/concepts/configuration/pod-priority-preemption/))([design doc](https://github.com/kubernetes/community/blob/master/...

* Support for Huge pages in empty_dir volume plugin ([#50072](https://github.com/kubernetes/kubernetes/pull/50072), [@squall0gd](https://github.com/squall0gd))
    * [Huge pages](https://www.kernel.org/doc/Documentation/vm/hugetlbpage.txt) can now be used with empty dir volume plugin.
* Alpha support for pre-allocated hugepages ([#50859](https://github.com/kubernetes/kubernetes/pull/50859), [@derekwaynecarr](https://github.com/derekwaynecarr))

  
  Please use the following format for linking documentation:
  - [KEP]: <link>
  - [Usage]: <link>
  - [Other doc]: <link>
  --> ([#113428](https://github.com/kubernetes/kubernetes/pull/113428), [@mengjiao-liu](https://github.com/mengjiao-liu)) [SIG API Machinery, Apps, Instrumentation and Testing]

* The kube-apiserver openapi doc now includes extensions identifying `APIService` and `CustomResourceDefinition` `kind`s ([#64174](https://github.com/kubernetes/kubernetes/pull/64174), [@liggitt](https://github.com/liggitt))

## What's New (Major Themes)

### Deprecation of FlexVolume

FlexVolume is deprecated. Out-of-tree CSI driver is the recommended way to write volume drivers in Kubernetes.
See [this doc](https://github.com/kubernetes/community/blob/master/sig-storage/volume-plugin-faq.md#kubernetes-volume-plugin-faq-for-storage-vendors) for more information.

- Kubernetes 1.24 is built with go1.18, which will no longer validate certificates signed with a SHA-1 hash algorithm by default. See https://golang.org/doc/go1.18#sha1 for more details. If you are using certificates like this in admission or conversion ([#109024](https://github.com/kubernetes/kubernetes/pull/109024), [@stlaz](https://github.com/stlaz))

  
  Please use the following format for linking documentation:
  - [KEP]: <link>
  - [Usage]: <link>
  - [Other doc]: <link>
  --> ([#101822](https://github.com/kubernetes/kubernetes/pull/101822), [@yuzhiquan](https://github.com/yuzhiquan)) [SIG API Machinery, Apps, Auth, Cloud Provider, Instrumentation, Node, Scheduling, Storage and Testing]

### Garbage Collector
* Added foreground garbage collection: the owner object will not be deleted until all its dependents are deleted by the garbage collector. Please checkout the [user doc](https://kubernetes.io/docs/concepts/abstractions/controllers/garbage-collection/) for details. ([#38676](https://github.com/kubernetes/kubernetes/pull/38676), [@caesarxuchao](https://github.com/caesarxuchao))

  
  Please use the following format for linking documentation:
  - [KEP]: <link>
  - [Usage]: <link>
  - [Other doc]: <link>
  --> ([#119495](https://github.com/kubernetes/kubernetes/pull/119495), [@bzsuni](https://github.com/bzsuni)) [SIG API Machinery]

- We’re working to simplify the Windows node join experience with better scripts and kubeadm. Scripts and doc updates are still in the works, but some of the needed improvements are included in 1.15.  These include: