* The CRD handler now properly re-creates stale CR storage to reflect CRD update. ([#79114](https://github.com/kubernetes/kubernetes/pull/79114), [@roycaihw](https://github.com/roycaihw))

* Added CRD Versioning with NOP converter ([#63830](https://github.com/kubernetes/kubernetes/pull/63830), [@mbohlool](https://github.com/mbohlool))

  - The schema for the alpha `CSINodeInfo` CRD has been split into `spec` and `status` fields, and new fields `status.available` and `status.volumePluginMechanism` added. Clusters using the previous alpha schema must delete and recreate the CRD using the new schema. ([#70515](https://github.com/kubernetes/kubernetes/pull/70515), [@davidz627](https://github.com/davidz627))

* Fix a bug in CRD openapi controller that user-defined CRD can overwrite OpenAPI definition/path for the CRD API. ([#81436](https://github.com/kubernetes/kubernetes/pull/81436), [@roycaihw](https://github.com/roycaihw))

* Active watches of custom resources now terminate properly if the CRD is modified. ([#78029](https://github.com/kubernetes/kubernetes/pull/78029), [@liggitt](https://github.com/liggitt))

-  Forget rate limit when CRD establish controller successfully updated CRD condition ([#67370](https://github.com/kubernetes/kubernetes/pull/67370), [@yue9944882](https://github.com/yue9944882))

#### **Custom Resources**

*   Validation of resources defined by a Custom Resource Definition (CRD) is now in beta ([#54647](https://github.com/kubernetes/kubernetes/pull/54647),[ @colemickens](https://github.com/colemickens))

- CEL CRD validation expressions may now reference existing object state using the identifier `oldSelf`. ([#108073](https://github.com/kubernetes/kubernetes/pull/108073), [@benluddy](https://github.com/benluddy))

- Fixed bug where providing a FieldPath to a CRD Validation Rule would erroneously affect the reported field path of other unrelated CRD Validation Rules on the same schema. ([#123475](https://github.com/kubernetes/kubernetes/pull/123475), [@alexzielenski](https://github.com/alexzielenski))

### Bug or Regression

- Fix nil pointer panic in BuildOpenAPIV2 and BuildOpenAPIV3 utilities, used by kube-apiserver's openAPI controller, when a CRD is missing version the requested version. ([#128940](https://github.com/kubernetes/kubernetes/pull/128940), [@jpbetz](https://github.com/jpbetz)) [SIG API Machinery]