- [beta] `kube-apiserver` support for the OpenAPI spec is moving from alpha to beta. The first [non-go client](https://github.com/kubernetes-incubator/client-python) is based on it ([kubernetes/features#53](https://github.com/kubernetes/enhancements/issues/53))
- **Apps**

  - [beta] `kube-apiserver` now publishes a swagger 2.0 spec in addition to a swagger 1.2 spec ([kubernetes/features#53](https://github.com/kubernetes/enhancements/issues/53))
  - [beta] Server-side garbage collection is enabled by default. See [user-guide](http://kubernetes.io/docs/user-guide/garbage-collection/)
- **Apps**

* Updating federation up scripts to work in non e2e setup ([#27260](https://github.com/kubernetes/kubernetes/pull/27260), [@nikhiljindal](https://github.com/nikhiljindal))
* version bump for gci to milestone 53 ([#27210](https://github.com/kubernetes/kubernetes/pull/27210), [@adityakali](https://github.com/adityakali))