* Set an upper bound (5 minutes) on how long the Kubelet will wait before exiting when the client cert from disk is missing or invalid. This prevents the Kubelet from waiting forever without attempting to bootstrap a new client credentials. ([#59316](https://github.com/kubernetes/kubernetes/pull/59316), [@smarterclayton](https://github.com/smarterclayton))

*   The admission webhook configurations API, part of the admissionregistration API, is now at v1beta1. Delete any existing webhook configurations before you upgrade, and update your configuration files to use the latest API. For this and the previous...

  - NetworkPolicy resources will no longer be served from `extensions/v1beta1` in v1.16. Migrate use to the `networking.k8s.io/v1` API, available since v1.8. Existing persisted data can be retrieved via the `networking.k8s.io/v1` API.

EndpointSlices with Pod referencing Nodes that don't exist couldn't be created or updated. The behavior on the EndpointSlice controller has been modified to update the EndpointSlice without the Pods that reference non-existing Nodes and keep retrying until all Pods reference existing Nodes. However, if `service.Spec.PublishNotReadyAddresses` is set, all the Pods are published without retrying. Fixed EndpointSlices metrics to reflect correctly the number of desired EndpointSlices when no endpoints...

  - NetworkPolicy resources will no longer be served from `extensions/v1beta1` in v1.16. Migrate use to the `networking.k8s.io/v1` API, available since v1.8. Existing persisted data can be retrieved via the `networking.k8s.io/v1` API.

- Kubeadm: during the validation of existing kubeconfig files on disk, handle cases where the "ca.crt" is a bundle and has intermediate certificates. Find a common trust anchor between the "ca.crt" bundle and the CA in the existing kubeconfig on disk instead of treating "ca.crt" as a file containing a single CA. ([#123102](https://github.com/kubernetes/kubernetes/pull/123102), [@as...

* Updating apiserver to return UID of the deleted resource. Clients can use this UID to verify that the resource was deleted or waiting for finalizers. ([#45600](https://github.com/kubernetes/kubernetes/pull/45600), [@nikhiljindal](https:/...

### SIG Auth

Work this cycle focused on graduating existing functions, and on making security functions more understandable for users.

The Cluster API effort is currently undergoing a complete rehaul of the existing codebase, moving off Terraform and into using govmomi directly.

### SIG-windows

SIG Windows focused on stability and reliability of our existing feature set. We primarily fixed bugs as we march towards a near future stable release.

## Action Required

    - [kubeadm](#kubeadm-2)
    - [kubectl](#kubectl-1)
      - [New Commands](#new-commands)
      - [Create subcommands](#create-subcommands)
      - [Updates to existing commands](#updates-to-existing-commands)
      - [Updates to apply](#updates-to-apply)
      - [Updates to edit](#updates-to-edit)
      - [Bug fixes](#bug-fixes)
      - [Other Notable Changes](#other-notable-changes-14)