interface{ ~int | ~string }  // type parameter only: implements comparable (int, string types are strictly comparable)
interface{ comparable }      // type parameter only: implements comparable (comparable implements itself)
interface{ ~int | ~[]byte }  // type parameter only: does not implement comparable (slices are not comparable)
interface{ ~struct{ any } }  // type parameter only: does not implement comparable (field any is not strictly comparable)
</pre>

  Plugins **have to** implement a QueueingHint for Pod/Update event if the rejection from them could be resolved by updating unscheduled Pods themselves.
  Example: suppose you develop a custom plugin that denies Pods that have a `schedulable=false` label. 

* kubeadm: added `--print-join-command` flag for `kubeadm token create`. ([#56185](https://github.com/kubernetes/kubernetes/pull/56185), [@mattmoyer](https://github.com/mattmoyer))
* Implement kubelet side file system resizing. Also implement GCE PD resizing ([#55815](https://github.com/kubernetes/kubernetes/pull/55815), [@gnufied](https://github.com/gnufied))

* implement proposal 34058: hostPath volume type ([#46597](https://github.com/kubernetes/kubernetes/pull/46597), [@dixudx](https://github.com/dixudx))
* HostAlias is now supported for both non-HostNetwork Pods and HostNetwork Pods. ([#50646](https://github.com/kubernetes/kubernetes/pull/50646), [@rickypai](https://github.com/rickypai))

* Flex volume plugin is updated to support attach/detach interfaces. It broke backward compatibility. Please update your drivers and implement the new callouts.  ([#41804](https://github.com/kubernetes/kubernetes/pull/41804), [@chakri-nelluri](https://github.com/chakri-nelluri))
* Implement the update feature for DaemonSet. ([#41116](https://github.com/kubernetes/kubernetes/pull/41116), [@lukaszo](https://github.com/lukaszo))

* Implements rolling update for StatefulSets. Updates can be performed using the RollingUpdate, Paritioned, or OnDelete strategies. OnDelete implements the manual behavior from 1.6. status now tracks  ([#46669](https://github.com/kubernetes/kubernetes/pull/46669), [@kow3ns](https://github.com/kow3ns))

## Changelog since v1.15.0

### Other notable changes

* kubeadm: implement support for concurrent add/remove of stacked etcd members ([#79677](https://github.com/kubernetes/kubernetes/pull/79677), [@neolit123](https://github.com/neolit123))

- Enhance Azure cloud provider code to support both AAD and ADFS authentication. ([#80841](https://github.com/kubernetes/kubernetes/pull/80841), [@rjaini](https://github.com/rjaini))
- kubeadm: implement support for concurrent add/remove of stacked etcd members ([#79677](https://github.com/kubernetes/kubernetes/pull/79677), [@neolit123](https://github.com/neolit123))

  - Add missing stable labels to template nodes
  
  ### HuaweiCloud
  - Add auto scaling group support
  - Implement node group by AS
  - Implement getting desired instance number of node group
  - Implement increasing node group size
  - Implement TemplateNodeInfo
  - Implement caching instances
  
  ### IONOS
  - Add support for IONOS
  
  ### Kubemark

- Adds feature gate `NodeLogQuery` which provides cluster administrators with a streaming view of logs using kubectl without them having to implement a client side reader or logging into the node. ([#96120](https://github.com/kubernetes/kubernetes/pull/96120), [@LorbusChris](https://github.com/LorbusChris))