Implementation restriction:
A union (with more than one term) cannot contain the
<a href="#Predeclared_identifiers">predeclared identifier</a> <code>comparable</code>
or interfaces that specify methods, or embed <code>comparable</code> or interfaces
that specify methods.
</p>

<p>
Interfaces that are not <a href="#Basic_interfaces">basic</a> may only be used as type
constraints, or as elements of other interfaces used as constraints.

- **[beta]** [Taints and tolerations](https://kubernetes.io/docs/concepts/configuration/assign-pod-node/). This feature allows you to specify rules for "repelling" pods from nodes by default, which enables use cases like dedicated nodes and reserving nodes with special features for pods that need those features. We've also added a `NoExecute` taint type that evicts already-running pods, and an associated `tolerationSeconds` field to tolerations to delay...

- Users can now specify azure file share name in the azure file plugin, making it possible to use existing shares or specify a new share name. ([#76988](https://github.com/kubernetes/kubernetes/pull/76988), [@andyzhangx](https://github.com/andyzhangx))

- [`KT-58932`](https://youtrack.jetbrains.com/issue/KT-58932) Specify the priority between candidates with type and value receivers when doing callable reference inference
- [`KT-54254`](https://youtrack.jetbrains.com/issue/KT-54254) Specify that an annotation type cannot have itself as a nested element
- [`KT-53427`](https://youtrack.jetbrains.com/issue/KT-53427) Specify `@SubclassOptInRequired`

conditions of title and non-infringement, and implied warranties or conditions of merchantability and fitness for a particular purpose; ii) effectively excludes on behalf of all Contributors all liability for damages, including direct, indirect, special, incidental and consequential damages, such as lost profits; iii) states that any provisions which differ from this Agreement are offered by that Contributor alone and not by any other party; and iv) states that source code for the Program is available...

## Major Themes

Kubernetes is developed by community members whose work is organized into
[Special Interest Groups][]. For the 1.8 release, each SIG provides the
themes that guided their work.

[Special Interest Groups]: https://github.com/kubernetes/community/blob/master/sig-list.md

### SIG API Machinery

* Fix mounting of UNIX sockets(and other special files) in subpaths ([#61480](https://github.com/kubernetes/kubernetes/pull/61480), [@gnufied](https://github.com/gnufied))

  // even if they are not included in this list.
  // Note that this field cannot be set when spec.os.name is windows.
  // +optional
  repeated int64 supplementalGroups = 4;

  // A special supplemental group that applies to all containers in a pod.
  // Some volume types allow the Kubelet to change the ownership of that volume
  // to be owned by the pod:
  //
  // 1. The owning GID will be the FSGroup

provider can now be specified as environment variables. When we convert the OpenStack cloud provider to run in an external process, we can now use the kubernetes Secrets capability to inject the OS_* variables. This way we can specify the cloud configuration as a configmap, and specify secrets for the userid/password information. The configmap is mounted as a file, and the secrets are made available as environment variables. The external controller itself runs as a pod/daemonset. For backward compatibility,...

  behind the `DynamicResourceAllocation` feature gate).
  The new API is now more flexible than the existing Device Plugins feature of Kubernetes because it
  allows Pods to request (claim) special kinds of resources, which can be available at node level, cluster
  level, or following any other model you implement.' ([#111023](https://github.com/kubernetes/kubernetes/pull/111023), [@pohly](https://github.com/pohly))