`Interrupted(error) bool` helper to replace checks for `err == ErrWaitTimeout`, or compare specifically to context errors as needed. A future release will make the `ErrWaitTimeout` error private and callers must use `Interrupted()` instead. If you are returning `ErrWaitTimeout` from your own methods, switch to creating a location specific `cause err` and pass it to the new method `wait.ErrorInterrupted(cause) error` which will ensure `Interrupted()` returns true for your loop. 
  
  The `wa...

* Protobuf serialization does not distinguish between `[]` and `null`. ([#45294](https://github.com/kubernetes/kubernetes/pull/45294), [@liggitt](https://github.com/liggitt))

  
  **How can I migrate?**
  
  For backward compatibility, nil `QueueingHintFn` is treated as always returning QueueAfterBackoff. 
  So, if you want to just keep the existing behavior, you can register `ClusterEventWithHint` with no `QueueingHintFn` in it. 

- PersistentVolumeClaim objects are no longer left with storage class...

### Feature

   ([#123003](https://github.com/kubernetes/kubernetes/pull/123003), [@alexzielenski](https://github.com/alexzielenski))
- Fixed a non-recursive list returning "resource version too high" error when consistent listing from cache is enabled.
   ([#123674](https://github.com/kubernetes/kubernetes/pull/123674), [@serathius](https://github.com/serathius))

- Added alpha support for `WindowsHostNetworking` feature. ([#112961](https://github.com/kubernetes/kubernetes/pull/112961), [@marosset](https://github.com/marosset))
- Added alpha support for returning container and pod metrics from CRI, instead of cAdvsior. ([#113609](https://github.com/kubernetes/kubernetes/pull/113609), [@haircommander](https://github.com/haircommander))

- Promote ServiceNodePortStaticSubrange to stable and lock to default ([#120233](https://github.com/kubernetes/kubernetes/pull/120233), [@xuzhenglun](https://github.com/xuzhenglun)) [SIG Network]