- Feature gates CSIMigration to Beta (on by default) and CSIMigrationGCE to Beta (off by default since it requires installation of the GCE PD CSI Driver) ([#85231](https://github.com/kubernetes/kubernetes/pull/85231), [@davidz627](https://github.com/davidz627))

## Known Issues

Please consult the installation procedure you are using (kargo, kops, kube-up,
kube-aws, kubeadm etc) for specific advice.

1.6 encourages etcd3, and switching from etcd2 to etcd3 involves a full
migration of data between different storage engines.  You must stop the API
from writing to etcd during an etcd2 -> etcd3 migration.  HA installations cannot

  * Fix ceph-secret type to kubernetes.io/rbd in kubernetes-master charm ([#44635](https://github.com/kubernetes/kubernetes/pull/44635), [@Cynerva](https://github.com/Cynerva))

  * Disallows installation of upstream docker from PPA in the Juju kubernetes-worker charm. ([#44681](https://github.com/kubernetes/kubernetes/pull/44681), [@wwwtyro](https://github.com/wwwtyro))

- Promote CSIMigrationOpenStack to Beta (off by default since it requires installation of the OpenStack Cinder CSI Driver. The in-tree AWS OpenStack Cinder driver "kubernetes.io/cinder" was deprecated in 1.16 and will be removed in 1.20. Users should enable CSIMigration + CSIMigrationOpenStack features and install the OpenStack Cinder...

- kubeadm: stop setting UID in the kubelet ConfigMap ([#66341](https://github.com/kubernetes/kubernetes/pull/66341), [@runiq](https://github.com/runiq))
- bazel deb package bugfix: The kubeadm deb package now reloads the kubelet after installation ([#65554](https://github.com/kubernetes/kubernetes/pull/65554), [@rdodev](https://github.com/rdodev))

- Reduced CPU and memory consumption of `kube-apiserver` if OpenAPI V2 will not be accessed by any client. Also improved performance of the apiserver on installation of many CRDs. ([#118212](https://github.com/kubernetes/kubernetes/pull/118212), [@Jefftree](https://github.com/Jefftree))

### Documentation

- Azure file migration graduates to beta, with CSIMigrationAzureFile flag off by default
  as it requires installation of AzureFile CSI Driver. Users should enable CSIMigration and
  CSIMigrationAzureFile features and install the [AzureFile CSI Driver](https://github.com/kubernetes-sigs/azurefile-csi-driver)

    String ONLINE_HELP_BASE_LINK = "online.help.base.link";

    /** The key of the configuration. e.g. https://fess.codelibs.org/{lang}/{version}/install/install.html */
    String ONLINE_HELP_INSTALLATION = "online.help.installation";

    /** The key of the configuration. e.g. https://fess.codelibs.org/{lang}/eol.html */
    String ONLINE_HELP_EOL = "online.help.eol";

    /** The key of the configuration. e.g. failureurl */

  
  The `kubeadm` package will stop depending on the `cri-tools` package in Kubernetes 1.32, which means that
  installing `kubeadm` will no longer automatically ensure installation of `crictl`. ([#124685](https://github.com/kubernetes/kubernetes/pull/124685), [@saschagrunert](https://github.com/saschagrunert))