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

- kubeadm commands now print warnings if input YAML documents contain unknown or duplicate fields.
- kubeadm now properly recognizes Docker 18.09.0 and newer, but still treats 18.06 as the default supported version.
- kubeadm now automatically sets the `--pod-infra-container-image` flag when starting the kubelet.

### SIG IBM Cloud

* [GCE] Enable by default audit logging truncating backend. ([#68288](https://github.com/kubernetes/kubernetes/pull/68288), [@loburm](https://github.com/loburm))
* kubeadm: fix a possible scenario where kubeadm can pull much newer control-plane images ([#69301](https://github.com/kubernetes/kubernetes/pull/69301), [@neolit123](https://github.com/neolit123))

- Kubeadm: fixed bug where v1beta3's ClusterConfiguration.APIServer.TimeoutForControlPlane is not respected in newer versions of kubeadm where v1beta4 is the default. ([#133754](https://github.com/kubernetes/kubernetes/pull/133754), [@HirazawaUi](https://github.com/HirazawaUi)) [SIG Cluster Lifecycle]

### Other (Cleanup or Flake)

* 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))

- Kubeadm: fixed bug where v1beta3's ClusterConfiguration.APIServer.TimeoutForControlPlane is not respected in newer versions of kubeadm where v1beta4 is the default. ([#133753](https://github.com/kubernetes/kubernetes/pull/133753), [@HirazawaUi](https://github.com/HirazawaUi)) [SIG Cluster Lifecycle]

## Dependencies

### Added

## 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

- The `ServerSideFieldValidation` feature has graduated to beta and is now enabled by default. Kubectl 1.24 and newer will use server-side validation instead of client-side validation when writing to API servers with the feature enabled. ([#108889](https://github.com/kubernetes/kubernetes/pull/108889), [@kevindelgado](https://github.com/kevindelgado))

### Bug or Regression

- Kubeadm: fixed bug where v1beta3's ClusterConfiguration.APIServer.TimeoutForControlPlane is not respected in newer versions of kubeadm where v1beta4 is the default. ([#133776](https://github.com/kubernetes/kubernetes/pull/133776), [@HirazawaUi](https://github.com/HirazawaUi)) [SIG Cluster Lifecycle]

### Other (Cleanup or Flake)

* 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))