* Fixes NotAuthenticated errors that appear in the kubelet and kube-controller-manager due to never logging in to vSphere ([#36169](https://github.com/kubernetes/kubernetes/pull/36169), [@robdaemon](https://github.com/robdaemon))
* Update amd64 kube-proxy base image to debian-iptables-amd64:v5 ([#39725](https://github.com/kubernetes/kubernetes/pull/39725), [@ixdy](https://github.com/ixdy))
* Update kube-proxy image to be based off of Debian 8.6 base image. ([#39695](https://github.com/kubernetes/kubernetes/pull/39695), [@ixdy](https://github.com/ixdy))
* Fixes an HPA-related panic due to division-by-zero. ([#39694](https://github.com/kubernetes/kubernetes/pull/39694), [@DirectXMan12](https://github.com/DirectXMan12))
* Update fluentd-gcp addon to 1.28.1 ([#39706](https://github.com/kubernetes/kubernetes/pull/39706), [@ixdy](https://github.com/ixdy))
* Provide kubernetes-controller-manager flags to control volume attach/detach reconciler sync. The duration of the syncs can be controlled, and the syncs can be shut off as well. ([#39551](https://github.com/kubernetes/kubernetes/pull/39551), [@chrislovecnm](https://github.com/chrislovecnm))
* AWS: Recognize ca-central-1 region ([#38410](https://github.com/kubernetes/kubernetes/pull/38410), [@justinsb](https://github.com/justinsb))
* fix nil dereference when doing a volume type check on persistent volumes ([#39529](https://github.com/kubernetes/kubernetes/pull/39529), [@sjenning](https://github.com/sjenning))
* Generate OpenAPI definition for inlined types ([#39466](https://github.com/kubernetes/kubernetes/pull/39466), [@mbohlool](https://github.com/mbohlool))
* Admit critical pods in the kubelet ([#38836](https://github.com/kubernetes/kubernetes/pull/38836), [@bprashanth](https://github.com/bprashanth))
* assign -998 as the oom_score_adj for critical pods (e.g. kube-proxy) ([#39114](https://github.com/kubernetes/kubernetes/pull/39114), [@dchen1107](https://github.com/dchen1107))
* Fix an issue where AWS tear-down leaks an DHCP Option Set. ([#38645](https://github.com/kubernetes/kubernetes/pull/38645), [@zmerlynn](https://github.com/zmerlynn))
* Give apply the versioned struct that generated from the type defined in the restmapping. ([#38982](https://github.com/kubernetes/kubernetes/pull/38982), [@ymqytw](https://github.com/ymqytw))
* Add support for Azure Container Registry, update Azure dependencies ([#37783](https://github.com/kubernetes/kubernetes/pull/37783), [@brendandburns](https://github.com/brendandburns))
* Fixes an issue where `hack/local-up-cluster.sh` would fail on the API server start with ([#38898](https://github.com/kubernetes/kubernetes/pull/38898), [@deads2k](https://github.com/deads2k))
* !!! [1215 15:42:56] Timed out waiting for apiserver: to answer at https://localhost:6443/version; tried 10 waiting 1 between each
* Since `kubernetes.tar.gz` no longer includes client or server binaries, `cluster/kube-{up,down,push}.sh` now automatically download released binaries if they are missing. ([#38730](https://github.com/kubernetes/kubernetes/pull/38730), [@ixdy](https://github.com/ixdy))
* Fixed validation of multizone cluster for GCE ([#38695](https://github.com/kubernetes/kubernetes/pull/38695), [@jszczepkowski](https://github.com/jszczepkowski))
* Fix nil pointer dereference in test framework ([#37583](https://github.com/kubernetes/kubernetes/pull/37583), [@mtaufen](https://github.com/mtaufen))
* Fixed detection of master during creation of multizone nodes cluster by kube-up. ([#38617](https://github.com/kubernetes/kubernetes/pull/38617), [@jszczepkowski](https://github.com/jszczepkowski))
