* kubeadm - Increase the manifest upgrade timeout to make upgrades more reliable. ([#65029](https://github.com/kubernetes/kubernetes/pull/65029), [@detiber](https://github.com/detiber))
* Webhooks for the mutating admission controller now support "remove" operation. ([#64971](https://github.com/kubernetes/kubernetes/pull/64971), [@sttts](https://github.com/sttts))

* AWS: Fix long-standing bug in stringSetToPointers ([#26331](https://github.com/kubernetes/kubernetes/pull/26331), [@therc](https://github.com/therc))
* AWS kube-up: Increase timeout waiting for docker start ([#25405](https://github.com/kubernetes/kubernetes/pull/25405), [@justinsb](https://github.com/justinsb))

     *   failure to reach any individual IP address doesn't fail the overall request. This can
     *   increase availability of multi-homed services.
     *
     * * **Stale pooled connections.** The [ConnectionPool] reuses sockets
     *   to decrease request latency, but these connections will occasionally time out.
     *
     * * **Unreachable proxy servers.** A [ProxySelector] can be used to

* Increase Horizontal Pod Autoscaler default update interval (30s -> 15s). It will improve HPA reaction time for metric changes. ([#68021](https://github.com/kubernetes/kubernetes/pull/68021), [@krzysztof-jastrzebski](https://github.com/krzysztof-jastrzebski))

					ctx := logger.SetReqInfo(ctx, reqInfo)
					peersLogOnceIf(ctx, err, addr.String())
				}

				// Wait for a minimum of 100ms and dynamically increase this based on number of attempts.
				if i < retryCount-1 {
					time.Sleep(100*time.Millisecond + time.Duration(r.Float64()*float64(time.Second)))
					continue
				}
			}
			break
		}
	}()
}

* [alpha] Volume resizing

  * You can now increase the size of a volume by calling the Kubernetes API.

  * For alpha, this feature increases only the size of the underlying volume. It does not support resizing the file system.

  * For alpha, volume resizing supports only Gluster volumes.

bumped version of golang it is compiled with to go1.18, which introduced significant changes to its garbage collection algorithm. As a result, we observed an increase in memory usage for kube-apiserver in larger an heavily loaded clusters up to ~25% (with the benefit of API call latencies drop by up to 10x on 99th percentiles). If the memory increase is not acceptable for you you can mitigate by setting GOGC env variable (for our tests using GOGC=63 brings memory usage back to original value, although...

* fix the create azure file pvc failure if there is no storage account in current resource group ([#56557](https://github.com/kubernetes/kubernetes/pull/56557), [@andyzhangx](https://github.com/andyzhangx))
* Increase allowed lag for ssh key sync loop in tunneler to allow for one failure ([#60068](https://github.com/kubernetes/kubernetes/pull/60068), [@wojtek-t](https://github.com/wojtek-t))

 - Fixes a regression in 1.17 that dropped cache-control headers on API requests ([#90468](https://github.com/kubernetes/kubernetes/pull/90468), [@liggitt](https://github.com/liggitt)) [SIG API Machinery and Testing]
 - Kubeadm: increase robustness for "kubeadm join" when adding etcd members on slower setups ([#90645](https://github.com/kubernetes/kubernetes/pull/90645), [@neolit123](https://github.com/neolit123)) [SIG Cluster Lifecycle]

    - [CSI Proxy for Windows](#csi-proxy-for-windows)
    - [Dashboard v2](#dashboard-v2)
    - [Windows containerd support graduates to beta](#windows-containerd-support-graduates-to-beta)
    - [Increase the Kubernetes support window to one year](#increase-the-kubernetes-support-window-to-one-year)
  - [Known Issues](#known-issues)
  - [Urgent Upgrade Notes](#urgent-upgrade-notes)