- Fixed https://github.com/kubernetes/client-go/issues/478 by adding support for JSON Patch in client-go/dynamic/fake ([#69330](https://github.com/kubernetes/kubernetes/pull/69330), [@vaikas](https://github.com/vaikas))
- Dry-run is promoted to Beta and will be enabled by default. ([#69644](https://github.com/kubernetes/kubernetes/pull/69644), [@apelisse](https://github.com/apelisse))

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- Added a redundant process to remove tracking finalizers from Pods that belong to Jobs. The process kicks in after the control plane marks a Job as finished. ([#119944](https://github.com/kubernetes/kubernetes/pull/119944), [@Sharpz7](https://github.com/Sharpz7))

  * Fix the bug where StartedAt time is not reported for exited containers. ([#45977](https://github.com/kubernetes/kubernetes/pull/45977), [@yujuhong](https://github.com/yujuhong))

* Changes/deprecations

  * Marks the Kubelet's `--master-service-namespace` flag deprecated ([#44250](https://github.com/kubernetes/kubernetes/pull/44250), [@mtaufen](https://github.com/mtaufen))

- **Admission webhooks:** Admission webhooks are in widespread use as a Kubernetes extensibility mechanism and have been available in beta since the 1.9 release. The 1.16 release marks the graduation of admission webhooks to general availability (GA).

#### Extensibility

- The community has been asking for continuing support of extensibility, so this cycle features more work around CRDs and API Machinery. Most of the enhancements in this cycle were from SIG API Machinery and related areas.

### Extensibility around core Kubernetes APIs

#### CustomResourceDefinitions Pruning

### Libraries

#### New Features

- [`KT-58046`](https://youtrack.jetbrains.com/issue/KT-58046) Stabilize remaining kotlin.time API: time sources, time marks, measureTime
- [`KT-58074`](https://youtrack.jetbrains.com/issue/KT-58074) Stabilization of Atomics API in K/N
- [`KT-55268`](https://youtrack.jetbrains.com/issue/KT-55268) Mutiplatform `@Volatile` annotation

### SIG Node

SIG-Node advanced several features and made incremental improvements in a few key topic areas this release.