- `MountPropagation`
  - `PersistentLocalVolumes`
- CoreDNS: The following directives or keywords are deprecated and will be removed in v1.15:
  - `upstream` option of `kubernetes` plugin, becoming default behavior in v1.15.
  - `proxy` plugin replaced by `forward` plugin

## Removed and deprecated metrics

### Removed metrics

- `reflector_items_per_list`
- `reflector_items_per_watch`
- `reflector_last_resource_version`

- Scheduler no longer runs the plugin's `Filter` method when its `PreFilter` method returned a Skip status.
  In other words, your `PreFilter`/`Filter` plugin can return a Skip status in `PreFilter` if the plugin does nothing in Filter for that Pod.
  Scheduler skips `NodeAffinity` Filter plugin when `NodeAffinity` Filter plugin has nothing to do with a Pod.

- Scheduler framework permit plugins now run at the end of the scheduling cycle, after reserve plugins. Waiting on permit will remain in the beginning of the binding cycle. ([#88199](https://github.com/kubernetes/kubernetes/pull/88199), [@mateuszlitwin](https://github.com/mateuszlitwin)) [SIG Scheduling]

* GCE PD volume plugin now supports block volumes. ([#58710](https://github.com/kubernetes/kubernetes/pull/58710), [@screeley44](https://github.com/screeley44))

* Added support to a hierarchy of kubectl plugins (a tree of plugins as children of other plugins). ([#45981](https://github.com/kubernetes/kubernetes/pull/45981), [@fabianofranz](https://github.com/fabianofranz))
    * Added exported env vars to kubectl plugins so that plugin developers have access to global flags, namespace, the plugin descriptor and the full path to the caller binary.

        </section>
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- Fixed a regression since 1.24 in the scheduling framework when overriding MultiPoint plugins (e.g. default plugins).

- Kubelet plugin registration now has retry and exponential backoff logic for when registration of plugins (such as CSI or device plugin) fail. ([#73891](https://github.com/kubernetes/kubernetes/pull/73891), [@taragu](https://github.com/taragu))

    public static final String MAVEN_RESOLVER_TRANSPORT = "maven.resolver.transport";

    /**
     * Plugin validation level.
     *
     * @since 3.9.2
     */
    @Config(defaultValue = "inline")
    public static final String MAVEN_PLUGIN_VALIDATION = "maven.plugin.validation";

    /**
     * Plugin validation exclusions.
     *
     * @since 3.9.6
     */
    @Config

- When a CNI plugin returns dual-stack pod IPs, kubelet will now try to respect the
  "primary IP family" of the cluster by picking a primary pod IP of the same family
  as the (primary) node IP, rather than assuming that the CNI plugin returned the IPs
  in the order the administrator wanted (since some CNI plugins don't allow