- kubeadm: Multiple API server endpoints support upon join is removed as it is now redundant. ([#69812](https://github.com/kubernetes/kubernetes/pull/69812), [@rosti](https://github.com/rosti))

- kubeadm: remove misleading error message regarding image pulling ([#66658](https://github.com/kubernetes/kubernetes/pull/66658), [@dixudx](https://github.com/dixudx))
- kubeadm: Pull sidecar and dnsmasq-nanny images when using kube-dns ([#66499](https://github.com/kubernetes/kubernetes/pull/66499), [@rosti](https://github.com/rosti))

#### Lifecycle

- Support for deprecated old kubeadm v1alpha3 config has been totally removed. ([#75179](https://github.com/kubernetes/kubernetes/pull/75179), [@rosti](https://github.com/rosti))
- kube-up.sh no longer supports "centos" and "local" providers. ([#76711](https://github.com/kubernetes/kubernetes/pull/76711), [@dims](https://github.com/dims))

#### Network

* fix detach azure disk back off issue which has too big lock in failure retry condition ([#76573](https://github.com/kubernetes/kubernetes/pull/76573), [@andyzhangx](https://github.com/andyzhangx))

- Kubeadm increased to 5 minutes its timeout for the TLS bootstrapping process to complete upon join ([#89735](https://github.com/kubernetes/kubernetes/pull/89735), [@rosti](https://github.com/rosti)) [SIG Cluster Lifecycle]
- hyperkube: Use debian-hyperkube-base@v1.1.0 image
  
    A previous release built hyperkube using the debian-hyperkube-base@v1.0.0,

- Fix a regression where kubeadm bails out with a fatal error when an optional version command line argument is supplied to the "kubeadm upgrade plan" command ([#94421](https://github.com/kubernetes/kubernetes/pull/94421), [@rosti](https://github.com/rosti)) [SIG Cluster Lifecycle]

* Added the `writable` boolean option to kubeadm config. This option works on a per-volume basis for `ExtraVolumes` config keys. ([#60428](https://github.com/kubernetes/kubernetes/pull/60428), [@rosti](https://github.com/rosti))

- Kubeadm increased to 5 minutes its timeout for the TLS bootstrapping process to complete upon join ([#89735](https://github.com/kubernetes/kubernetes/pull/89735), [@rosti](https://github.com/rosti)) [SIG Cluster Lifecycle]
- hyperkube: Use debian-hyperkube-base@v1.1.0 image
  
    A previous release built hyperkube using the debian-hyperkube-base@v1.0.0,

- Fix a regression where kubeadm bails out with a fatal error when an optional version command line argument is supplied to the "kubeadm upgrade plan" command ([#94421](https://github.com/kubernetes/kubernetes/pull/94421), [@rosti](https://github.com/rosti)) [SIG Cluster Lifecycle]
- Fix azure disk attach failure for disk size bigger than 4TB ([#95463](https://github.com/kubernetes/kubernetes/pull/95463), [@andyzhangx](https://github.com/andyzhangx)) [SIG Cloud Provider]

* Fixed issue with charm upgrades resulting in an error state. ([#59064](https://github.com/kubernetes/kubernetes/pull/59064), [@hyperbolic2346](https://github.com/hyperbolic2346))