* The `batch/v2alpha1.ScheduledJob` was removed. Migrate to `batch/v1beta.CronJob` to continue managing time based jobs.

* The `rbac/v1alpha1`, `settings/v1alpha1`, and `scheduling/v1alpha1` APIs are disabled by default.

* Fix TestServiceAlloc flakes ([#37487](https://github.com/kubernetes/kubernetes/pull/37487), [@wojtek-t](https://github.com/wojtek-t))
* Change ScheduledJob POD name suffix from hash to Unix Epoch ([#36883](https://github.com/kubernetes/kubernetes/pull/36883), [@jakub-d](https://github.com/jakub-d))

    If you do not, you risk allowing unauthorized users to access your federation apiserver.
  * You do not need to adjust this flag on Kubelet:  there was no authorization for the Kubelet APIs in 1.4.
* batch/v2alpha1.ScheduledJob has been renamed, use batch/v2alpha1.CronJob instead ([#36021](https://github.com/kubernetes/kubernetes/pull/36021), [@soltysh](https://github.com/soltysh))
* PetSet has been renamed to StatefulSet.

* 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))