- Added error handling for seccomp localhost configurations that do not properly set a `localhostProfile`. ([#117020](https://github.com/kubernetes/kubernetes/pull/117020), [@cji](https://github.com/cji))

  so cluster operators can opt in to omit managed fields of the request and response bodies from 
  being written to the API audit log. (#94986, @tkashem) [SIG API Machinery, Auth, Cloud Provider and Testing]
- Create HPA v2 from v2beta2 with some fields changed. (#102534, @wangyysde) [SIG API Machinery, Apps, Auth, Autoscaling and Testing]

- Server Side Apply now treats all <Some>Selector fields as atomic (meaning the entire selector is managed by a single writer and updated together), since they contain interrelated and inseparable fields that do not merge in intuitive ways. ([#97989](https://github.com/kubernetes/kubernetes/pull/97989), [@Danil-Grigorev](https://github.com/Danil-Grigorev)) [SIG API Machinery]...

### Other (Cleanup or Flake)

- When retrieving event resources, the reportingController and reportingInstance fields in the event will contain values. ([#120067](https://github.com/kubernetes/kubernetes/pull/120067), [@HirazawaUi](https://github.com/HirazawaUi)) [SIG Instrumentation]

## Dependencies

### Added

- Fixed overriding default `KubeletConfig` fields in drop-in configs if not set. ([#121193](https://github.com/kubernetes/kubernetes/pull/121193), [@sohankunkerkar](https://github.com/sohankunkerkar))

* Fixes a bug in openapi published for custom resources using x-kubernetes-preserve-unknown-fields extensions, so that kubectl will allow sending unknown fields for that portion of the object. ([#79636](https://github.com/kubernetes/kubernetes/pull/79636), [@liggitt](https://github.com/liggitt))

    * future, client-side validation in 1.14 kubectl against a 1.15 cluster will reject
    * unknown fields for CRDs with validation schema defined. 
* Fix kubelet start failure issue on Azure Stack due to InstanceMetadata setting ([#74936](https://github.com/kubernetes/kubernetes/pull/74936), [@rjaini](https://github.com/rjaini))

    * If your config files contains fields with wrong case, the config files will be now invalid.