- Kubeadm: added `show-join-command` as a new separate phase at the end of `kubeadm init`. You can skip printing the join information by using `kubeadm init --skip-phases=show-join-command`. Executing only this phase on demand will throw an error because the phase needs dependencies such as bootstrap tokens to be pre-populated. ([#111512](https://github.com/kubernetes/kubernetes/pull/111512), [@SataQiu](https://github.com/SataQiu))

- Azure virtual machine scale sets (VMSS) allow you to create and manage identical load balanced VMs that automatically increase or decrease based on demand or a set schedule.

- Kubeadm: unhide the "etcd-join" phase of "kubeadm join" to allow on-demand execution of the phase if the ControlPlaneLocalMode feature gate is not enabled ([#135482](https://github.com/kubernetes/kubernetes/pull/135482), [@borovetsav](https://github.com/borovetsav)) [SIG Cluster Lifecycle]

- Kubeadm: unhide the "etcd-join" phase of "kubeadm join" to allow on-demand execution of the phase if the ControlPlaneLocalMode feature gate is not enabled ([#135481](https://github.com/kubernetes/kubernetes/pull/135481), [@borovetsav](https://github.com/borovetsav)) [SIG Cluster Lifecycle]

### Pod resource metrics

On-demand metrics calculation is now available through `/metrics/resources`. [When enabled](

at:{LT:"H:mm",LTS:"H:mm:ss",L:"DD/MM/YYYY",LL:"D MMMM [de] YYYY",ll:"D MMM YYYY",LLL:"D MMMM [de] YYYY [a] H:mm",lll:"D MMM YYYY, H:mm",LLLL:"dddd D MMMM [de] YYYY [a] H:mm",llll:"ddd D MMM YYYY, H:mm"},calendar:{sameDay:"[u\xe8i a] LT",nextDay:"[deman a] LT",nextWeek:"dddd [a] LT",lastDay:"[i\xe8r a] LT",lastWeek:"dddd [passat a] LT",sameElse:"L"},relativeTime:{future:"d'aqu\xed %s",past:"fa %s",s:"unas segondas",ss:"%d segondas",m:"una minuta",mm:"%d minutas",h:"una ora",hh:"%d oras",d:"un jorn",dd:"%d...

- Kubeadm: fixed a bug where an image is not pulled...

 You can continue to use code that depends on mutable selectors by calling
 the apps/v1beta1 API in this release, but you should start planning for code
 that does not depend on mutable selectors.

 - Extended Resources are fully-qualified resource names outside the
 `kubernetes.io` domain. Extended Resource quantities must be integers.

  * Marking a StorageClass as default makes it so that even a PersistentVolumeClaim without a StorageClass specified will trigger dynamic provisioning (instead of binding to an existing pool of PVs).
  * If you depend on the old behavior of volumes binding to existing pool of PersistentVolume objects then modify the StorageClass object and set `storageclass.beta.kubernetes.io/is-default-class` to `false`.

([#64706](https://github.com/kubernetes/kubernetes/pull/64706), [@liztio](https://github.com/liztio))
* The `PersistentVolumeLabel` admission controller is now disabled by default. If you depend on this feature (AWS/GCE) then ensure it is added to the `--enable-admission-plugins` flag on the kube-apiserver. ([#64326](https://github.com/kubernetes/kubernetes/pull/64326), [@andrewsykim](https://github.com/andrewsykim))