Other notable changes include:
* CoreDNS replaces kube-dns as the default DNS provider

- Terminating a restartPolicy=Never pod no longer has a chance to report the pod succeeded when it actually failed. ([#88440](https://github.com/kubernetes/kubernetes/pull/88440), [@smarterclayton](https://github.com/smarterclayton)) [SIG Node and Testing]

<h3 id="String_types">String types</h3>

<p>
A <i>string type</i> represents the set of string values.
A string value is a (possibly empty) sequence of bytes.
The number of bytes is called the length of the string and is never negative.
Strings are immutable: once created,
it is impossible to change the contents of a string.
The predeclared string type is <code>string</code>;
it is a <a href="#Type_definitions">defined type</a>.
</p>

* Fix a bug where kubelet would not retry pod sandbox creation when the restart policy of the pod is Never ([#79451](https://github.com/kubernetes/kubernetes/pull/79451), [@yujuhong](https://github.com/yujuhong))

- Kubernetes is now built with Go 1.20.4 ([#117773](https://github.com/kubernetes/kubernetes/pull/117773), [@xmudrii](https://github.com/xmudrii)) [SIG Release and Testing]

### Failing Test

- Allow Azure Disk e2es to use newer topology labels if available from nodes ([#117216](https://github.com/kubernetes/kubernetes/pull/117216), [@gnufied](https://github.com/gnufied)) [SIG Storage and Testing]

### Bug or Regression

* gitRepo volumes in pods no longer require git 1.8.5 or newer, older git versions are supported too now. ([#62394](https://github.com/kubernetes/kubernetes/pull/62394), [@jsafrane](https://github.com/jsafrane))

- Fixed a startup probe race condition that caused main containers to remain stuck in "Initializing" state when sidecar containers with startup probes failed initially but succeeded on restart in pods with restartPolicy=Never. ([#134801](https://github.com/kubernetes/kubernetes/pull/134801), [@yuanwang04](https://github.com/yuanwang04)) [SIG Node and Testing]

- Node affinity, Node selectors, and tolerations are now mutable for Jobs that are suspended and have never been started ([#105479](https://github.com/kubernetes/kubernetes/pull/105479), [@ahg-g](https://github.com/ahg-g))
- Pod template annotations and labels are now mutable for Jobs that are suspended and have never been started ([#105980](https://github.com/kubernetes/kubernetes/pull/105980), [@ahg-g](https://github.com/ahg-g))

* kubeadm 1.8 now properly handles upgrades from to 1.7.x to newer release in 1.7 branch ([#53338](https://github.com/kubernetes/kubernetes/pull/53338), [@kad](https://github.com/kad))

## Known Issues

- The etcd and KMS plugin health checks are not exposed in the new `livez` and `readyz` endpoints. This will be fixed in 1.16.1.
- Systems running `iptables` 1.8.0 or newer should start it in legacy mode. Please note that this affects all versions of Kubernetes and not only v1.16.0. For more detailed information about the issue and how to apply a workaround, please refer to the official documentation