* Remove kubectl namespace command ([#33275](https://github.com/kubernetes/kubernetes/pull/33275), [@maciaszczykm](https://github.com/maciaszczykm))
* Automatic generation of man pages ([#33277](https://github.com/kubernetes/kubernetes/pull/33277), [@mkumatag](https://github.com/mkumatag))

### Extensibility around core Kubernetes APIs

#### CustomResourceDefinitions Pruning

* Add automatic etcd 3.2->3.1 and 3.1->3.0 minor version rollback support to gcr.io/google_container/etcd images. For HA clusters, all members must be stopped before performing a rollback. ([#59298](https://github.com/kubernetes/kubernetes/pull/59298), [@jpbetz...

[soft-reserve a range for static IP address assignments](https://kubernetes.io/docs/concepts/services-networking/service/#service-ip-static-sub-range)
to Services.
With the manual enablement of this feature, the cluster will prefer automatic assignment from
the pool of Service IP addresses thereby reducing the risk of collision.

A Service `ClusterIP` can be assigned:

- Automatic allocation of NodePorts for services with type LoadBalancer can now be disabled by setting the (new) parameter

### SIG Openstack

    * the default kube-up.sh scripts. This StorageClass is marked as default so that
    * a PersistentVolumeClaim without a StorageClass annotation now results in
    * automatic provisioning of storage (GCE PersistentDisk on Google Cloud, AWS
    * EBS on AWS, and Cinder on OpenStack). In previous versions of Kubernetes
    * a PersistentVolumeClaim without a StorageClass annotation on these cloud

modify any covered work.  These actions infringe copyright if you do
not accept this License.  Therefore, by modifying or propagating a
covered work, you indicate your acceptance of this License to do so.

  10. Automatic Licensing of Downstream Recipients.

  Each time you convey a covered work, the recipient automatically
receives a license from the original licensors, to run, modify and

- Kube-log-runner: Added the `-log-file-size` parameter to rotate log output into a new file once it reached a certain size. Introduced `-log-file-age` to enable automatic removal of old output files, and `-flush-interval` to support periodic flushing. ([#127667](https://github.com/kubernetes/kubernetes/pull/127667), [@zylxjtu](https://github.com/zylxjtu)) [SIG API Machinery, Apps, Architecture, Auth, Autoscaling,...

  manager. ([#114095](https://github.com/kubernetes/kubernetes/pull/114095), [@aimuz](https://github.com/aimuz))

### Other (Cleanup or Flake)

- Added automatic download of the CNI binary in `local-up-cluster.sh`, facilitating local debugging. ([#120312](https://github.com/kubernetes/kubernetes/pull/120312), [@HirazawaUi](https://github.com/HirazawaUi))