- kubeadm: Added a `v1beta1` API. ([#69289](https://github.com/kubernetes/kubernetes/pull/69289), [@fabriziopandini](https://github.com/fabriziopandini))
- kubeadm: Use `advertise-client-urls` instead of `listen-client-urls` as and `etcd-servers` options for apiserver. ([#69827](https://github.com/kubernetes/kubernetes/pull/69827), [@tomkukral](https://github.com/tomkukral))

*   It is now possible to set multiple manifest URL headers with the kubelet's `--manifest-url-header` flag. Multiple headers for the same key will be added in the order provided. The ManifestURLHeader field in KubeletConfiguration object (kubeletconfig/v1alpha1) is now a map[string][]string, which facilitates writing JSON...

#### kubectl:

  - https://github.com/kubernetes-sigs/kustomize/pull/4985: If you previously included .git in an AWS or Azure URL, we will no longer automatically remove that suffix. You may need to add an extra / to replace the .git for the URL to properly resolve.

- If the user specifies an invalid timeout in the request URL, the request will be aborted with an HTTP 400.

* [fluentd-gcp addon] Use the logging agent's node name as the metadata agent URL. ([#63353](https://github.com/kubernetes/kubernetes/pull/63353), [@bmoyles0117](https://github.com/bmoyles0117))

    attributes:
      label: Anything else we need to know?

  - type: textarea
    id: sigs
    attributes:
      label: Relevant SIG(s)
      description: You can identify the SIG from the "prowjob_config_url" on the testgrid dashboard for a test.

* Fix instance metadata service URL. ([#49081](https://github.com/kubernetes/kubernetes/pull/49081), [@brendandburns](https://github.com/brendandburns))

- Fixed a regression in `kubectl` and `client-go` discovery when configured with a server URL other than the root of a server ([#117495](https://github.com/kubernetes/kubernetes/pull/117495), [@ardaguclu](https://github.com/ardaguclu))

- Kubeadm: relax the validation of kubeconfig server URLs. Allow the user to define custom kubeconfig server URLs without erroring out during validation of existing kubeconfig files (e.g. when using external CA mode). ([#94816](https://github.com/kubernetes/kubernetes/pull/94816), [@neolit123](https://github.com/neolit123)) [SIG Cluster...