- [migration phase 1] PodFitsResources as framework plugin ([#83650](https://github.com/kubernetes/kubernetes/pull/83650), [@wgliang](https://github.com/wgliang))
- [migration phase 1] PodMatchNodeSelector/NodAffinity as filter plugin ([#83660](https://github.com/kubernetes/kubernetes/pull/83660), [@wgliang](https://github.com/wgliang))

- The Kubernetes apiserver now emits a warning message for Pods with a null labelSelector in podAffinity or topologySpreadConstraints. The null labelSelector means "match none". Using it in podAffinity or topologySpreadConstraint could lead to unintended behavior. ([#117025](https://github.com/kubernetes/kubernetes/pull/117025), [@sanposhiho](https://github.com/sanposhiho)) [SIG Scheduling]

- Graduate the `MatchLabelKeys` (MismatchLabelKeys) feature in PodAffinity (PodAntiAffinity) to GA ([#130463](https://github.com/kubernetes/kubernetes/pull/130463), [@sanposhiho](https://github.com/sanposhiho)) [SIG API Machinery, Apps, Node, Scheduling and Testing]
- Graduated image volume sources to beta:

- The `matchLabelKeys/mismatchLabelKeys` feature is introduced to the hard/soft `PodAffinity/PodAntiAffinity`. ([#116065](https://github.com/kubernetes/kubernetes/pull/116065), [@sanposhiho](https://github.com/sanposhiho))

- Achieved 2X performance improvement on both required and preferred PodAffinity. ([#76243](https://github.com/kubernetes/kubernetes/pull/76243), [@Huang-Wei](https://github.com/Huang-Wei))

* Add scheduler benchmark tests for PodAffinity and NodeAffinity. ([#69898](https://github.com/kubernetes/kubernetes/pull/69898), [@Huang-Wei](https://github.com/Huang-Wei))

- Graduated MatchLabelKeys/MismatchLabelKeys feature in PodAffinity/PodAntiAffinity to Beta. ([#123638](https://github.com/kubernetes/kubernetes/pull/123638), [@sanposhiho](https://github.com/sanposhiho)) [SIG API Machinery, Apps, Scheduling and Testing]

* Resolves regression generating informers for packages whose names contain `.` characters ([#82410](https://github.com/kubernetes/kubernetes/pull/82410), [@nikhita](https://github.com/nikhita))
* Fixed a scheduler panic when using PodAffinity. ([#82841](https://github.com/kubernetes/kubernetes/pull/82841), [@Huang-Wei](https://github.com/Huang-Wei))

- The `pod/eviction` subresource now accepts `policy/v1` eviction requests in addition to `policy/v1beta1` eviction requests ([#100724](https://github.com/kubernetes/kubernetes/pull/100724), [@liggitt](https://github.com/liggitt))
- The `podAffinity`, `NamespaceSelector` and the associated `CrossNamespaceAffinity` quota scope features graduate to Beta and they are now enabled by default. ([#101496](https://github.com/kubernetes/kubernetes/pull/101496), [@ahg-g](https://github.com/ahg-g))