- The underlying format of the `CPUManager` state file has changed. Upgrades should be seamless, but any third-party tools that rely on reading the previous format need to be updated. ([#84462](https://github.com/kubernetes/kubernetes/pull/84462), [@klueska](https://github.com/klueska)) [SIG Node and Testing]

* On GCI, cleanup kubelet startup ([#35319](https://github.com/kubernetes/kubernetes/pull/35319), [@vishh](https://github.com/vishh))
* Add a retry when reading a file content from a container ([#35560](https://github.com/kubernetes/kubernetes/pull/35560), [@jingxu97](https://github.com/jingxu97))

* [Federation][kubefed]: Use StorageClassName for etcd pvc ([#46323](https://github.com/kubernetes/kubernetes/pull/46323), [@marun](https://github.com/marun))
* Restrict active deadline seconds max allowed value to be maximum uint32 ([#46640](https://github.com/kubernetes/kubernetes/pull/46640), [@derekwaynecarr](https://github.com/derekwaynecarr))

			c.Lock()
			defer c.Unlock()
			c.state = srState{}
			c.enabled = false
		}
		return err
	}

	// attempt to read just the version key in the state file to ensure we
	// are reading a compatible version.
	var ver struct {
		Version int `json:"version"`
	}
	err = json.Unmarshal(buf, &ver)
	if err != nil {
		return err
	}
	if ver.Version != srStateFormatVersion1 {

- If the user specifies an invalid timeout in the request URL, the request will be aborted with an HTTP 400.
  - in cases where the client specifies a timeout in the request URL, the overall request deadline is shortened now since the deadline is setup as soon as the request is received by the apiserver. ([#96901](https://github.com/kubernetes/kubernetes/pull/96901), [@tkashem](https://github.com/tkashem)) [SIG API Machinery and Testing]

is done for the related RBAC rules. The old format is now DEPRECATED and will be removed after the feature graduates to GA. When writing the ConfigMap kubeadm (init, upgrade apply) will respect the value of UnversionedKubeletConfigMap, while when reading it (join, reset, upgrade), it would attempt to use new format first and fallback to the legacy format if needed. ([#105741](https://github.com/kubernetes/kubernetes/pull/105741), [@neolit123](https://github.com/neolit123)) [SIG Cluster Lifecycle and...

- If the user specifies an invalid timeout in the request URL, the request will be aborted with an HTTP 400.
  - If the user specifies a timeout in the request URL that exceeds the maximum request deadline allowed by the apiserver, the request will be aborted with an HTTP 400. ([#96061](https://github.com/kubernetes/kubernetes/pull/96061), [@tkashem](https://github.com/tkashem)) [SIG API Machinery, Network and Testing]

* Add fallbacks to ARM API when getting empty node IP from Azure IMDS ([#69077](https://github.com/kubernetes/kubernetes/pull/69077), [@feiskyer](https://github.com/feiskyer))
* Deduplicate PATH items when reading plugins. ([#69089](https://github.com/kubernetes/kubernetes/pull/69089), [@soltysh](https://github.com/soltysh))

- Kubelet: the following dockershim related flags are also removed along with dockershim `--experimental-dockershim-root-directory`, `--docker-endpoint`, `--image-pull-progress-deadline`, `--network-plugin`, `--cni-conf-dir`, `--cni-bin-dir`, `--cni-cache-dir`, `--network-plugin-mtu`. ([#106907](https://github.com/kubernetes/kubernetes/pull/106907), [@cyclinder](https://github.com/cyclinder))

in accord with this section must be in a format that is publicly
documented (and with an implementation available to the public in
source code form), and must require no special password or key for
unpacking, reading or copying.

  7. Additional Terms.

  "Additional permissions" are terms that supplement the terms of this
License by making exceptions from one or more of its conditions.