This release SIG API Machinery focused mainly on CustomResources. For example, subresources for CustomResources are now beta and enabled by default. With this, updates to the `/status` subresource will disallow updates to all fields other than `.status` (not just `.spec` and `.metadata` as before). Also, `required` and `description` can be used at the root of the CRD OpenAPI validation schema when the `/status` subresource is enabled.

- Kube-apiserver: Made the subresources `pods/exec`, `pods/attach`, and `pods/portforward` require `create` permission for both SPDY and Websocket API requests. Previously, SPDY requests required `create` permission, but Websocket requests only required `get` permission. This change...

### Instrumentation

* For advanced auditing, audit policy supports subresources wildcard matching, such as "resource/", "/subresource","*". ([#55306](https://github.com/kubernetes/kubernetes/pull/55306), [@hzxuzhonghu](https://github.com/hzxuzhonghu))

* Advanced audit policy now supports matching subresources and resource names, but the top level resource no longer matches the subresouce. For example "pods" no longer matches requests to the logs subresource of pods. Use "pods/logs" to match subresources. ([#48836](https://github.com/kubernetes/kubernetes/pull/48836), [@ericchiang](https://github.com/ericchiang))

- In clusters where the DryRun feature is enabled, dry-run requests...

* Audit policy supports matching subresources and resource names, but the top level resource no longer matches the subresouce. For example "pods" no longer matches requests to the logs subresource of pods. Use "pods/logs" to match subresources. ([#48836](https://github.com/kubernetes/kubernetes/pull/48836), [@ericchiang](https://github.com/ericchiang))

    * The body size limit does not apply to subresources like pods/proxy that proxy request content to another server.

     */
    void copyTo(SmbResource dest) throws CIFSException;

    /**
     * Changes the name of the file this <code>SmbResource</code> represents to the name
     * designated by the <code>SmbResource</code> argument.
     * <br>
     * <i>Remember: <code>SmbResource</code>s are immutable and therefore
     * the path associated with this <code>SmbResource</code> object will not

- Removed restrictions on subresource flag in kubectl commands ([#128296](https://github.com/kubernetes/kubernetes/pull/128296), [@AnishShah](https://github.com/AnishShah)) [SIG CLI]
- Revised the kubelet API Authorization with new subresources, that allow finer-grained authorization checks and access control for kubelet endpoints.

  - `spec.version` is removed in v1; use `spec.versions` instead
  - `spec.validation` is removed in v1; use `spec.versions[*].schema` instead
  - `spec.subresources` is removed in v1; use `spec.versions[*].subresources` instead
  - `spec.additionalPrinterColumns` is removed in v1; use `spec.versions[*].additionalPrinterColumns` instead