- Kubeadm now prints all the kubelets and nodes that need to be upgraded when running "upgrade plan".
   ([#123578](https://github.com/kubernetes/kubernetes/pull/123578), [@carlory](https://github.com/carlory))

Kubernetes 1.8 adds the apps/v1beta2 group and version, which now consists of the
DaemonSet, Deployment, ReplicaSet and StatefulSet kinds. This group and version are part
of the Kubernetes Workloads API. We plan to move them to v1 in an upcoming release, so you might want to plan your migration accordingly.

For more information, see [the issue that describes this work in detail](https://github.com/kubernetes/enhancements/issues/353)

*   kube-apiserver: `--ssh-user` and `--ssh-keyfile` are now deprecated and will be removed in a future release. Users of SSH tunnel functionality in Google Container Engine for the Master -> Cluster communication should plan alternate methods for bridging master and node networks. ([#54433](https://github.com/kubernetes/kubernetes/pull/54433),[ @dims](https://github.com/dims))

- kubeadm: `kubeadm upgrade plan` now supports `--etcd-upgrade` flag to control whether the etcd upgrade plan should be displayed. Add an `EtcdUpgrade` field into `UpgradeConfiguration.Plan` for v1beta4. ([#130023](https://github.com/kubernetes/kubernetes/pull/130023), [@SataQiu](https://github.com/SataQiu)) [SIG Cluster Lifecycle]

- [Namespaced Brokers](https://svc-cat.io/docs/namespaced-broker-resources/), which enable operators to install a broker into a namespace instead of the cluster level, reached GA.
- The [Service Plan Defaults](https://svc-cat.io/docs/service-plan-defaults/) feature is in alpha and is under active development. This feature gives operators the ability to define defaults for when someone provisions a service.

### (No, really, you MUST read this before you upgrade)

### SIG Network

- Support `controlplane` as a valid EgressSelection type in the EgressSelectorConfiguration...

  be removed in a future release) and added a new flag ''--output" that serves the
  same purpose. Affected commands are - "kubeadm config images list", "kubeadm token
  list", "kubeadm upgrade plan", "kubeadm certs check-expiration".' ([#124393](https://github.com/kubernetes/kubernetes/pull/124393), [@carlory](https://github.com/carlory)) [SIG Cluster Lifecycle]
- ACTION REQUIRED for custom scheduler plugin developers:

- Kubeadm: Some text in the `kubeadm upgrade plan` output has changed. If you have scripts or other automation that parses this output, please review these changes and update your scripts to account for the new output. ([#98728](https://github.com/kubernetes/kubernetes/pull/98728), [@stmcginnis](...