- [beta] Server-side garbage collection is enabled by default. See [user-guide](http://kubernetes.io/docs/user-guide/garbage-collection/)
- **Apps**

* Update PodSecurityPolicy types and add admission controller that could enforce them ([#24600](https://github.com/kubernetes/kubernetes/pull/24600), [@pweil-](https://github.com/pweil-))
* Introducing ScheduledJobs as described in [the proposal](docs/proposals/scheduledjob.md) as part of `batch/v2alpha1` version (experimental feature). ([#24970](https://github.com/kubernetes/kubernetes/pull/24970), [@soltysh](https://github.com/soltysh))

## Changelog since v1.5.0-alpha.2

### Action Required

* Deprecate extensions/v1beta1.Jobs ([#36355](https://github.com/kubernetes/kubernetes/pull/36355), [@soltysh](https://github.com/soltysh))
* Rename ScheduledJobs to CronJobs. ([#36021](https://github.com/kubernetes/kubernetes/pull/36021), [@soltysh](https://github.com/soltysh))

* Remove deprecated ScheduledJobs endpoints, use CronJobs instead. ([#49930](https://github.com/kubernetes/kubernetes/pull/49930), [@soltysh](https://github.com/soltysh))