* The namespace API object no longer supports the deletecollection operation, which was previously allowed by mistake and did not respect expected namespace lifecycle semantics. ([#47098](https://github.com/kubernetes/kubernetes/pull/47098), [@liggitt](https://github.com/liggitt))

This release has **no breaking changes**. 🎉

It upgrades the version ranges of sub-dependencies to allow applications using FastAPI to easily upgrade them.

Soon there will be a new FastAPI release upgrading Starlette to take advantage of recent improvements, but as that has a higher chance of having breaking changes, it will be in a separate release.

### Features

- Introduced new apiserver metric `apiserver_flowcontrol_current_inqueue_seats`. This metric is analogous to `apiserver_flowcontrol_current_inqueue_requests`, but tracks the total number of seats, as each request can take more than one seat. ([#119385](https://github.com/kubernetes/kubernetes/pull/119385), [@andrewsykim](https://github.com/andrewsykim))

- Makes locally attached (non-network attached) storage available as a persistent volume source.
- Allows users to take advantage of the typically cheaper and improved performance of persistent local storage

  // will be reported as an event when the container is starting. When a key exists in multiple
  // sources, the value associated with the last source will take precedence.
  // Values defined by an Env with a duplicate key will take precedence.
  // Cannot be updated.
  // +optional
  repeated EnvFromSource envFrom = 19;

  // List of environment variables to set in the container.
  // Cannot be updated.

- Fix the bug where image garbage collection is disabled by mistake. ([#66051](https://github.com/kubernetes/kubernetes/pull/66051), [@jiaxuanzhou](https://github.com/jiaxuanzhou))

- client-go discovery clients constructed using `NewDiscoveryClientForConfig` or `NewDiscoveryClientForConfigOrDie` default to rate limits that cause normal discovery request patterns to take several seconds. This is fixed in https://issue.k8s.io/86168 and will be resolved in v1.17.1. As a workaround, the `Burst` value can be adjusted higher in the rest.Config passed into `NewDiscoveryClientForConfig` or `NewDiscoveryClientForConfigOrDie`....

- Fix that prevents repeated fetching of PVC/PV objects by kubelet when processing of pod volumes fails. While this prevents hammering API server in these error scenarios, it means that some errors in processing volume(s) for a pod could now take up to 2-3 minutes before retry. ([#88141](https://github.com/kubernetes/kubernetes/pull/88141), [@tedyu](https://github.com/tedyu)) [SIG Node and Storage]

- Fixed incorrect calculation for ResourceQuota with PriorityClass as its scope. ([#117677](https://github.com/kubernetes/kubernetes/pull/117677), [@Huang-Wei](https://github.com/Huang-Wei)) [SIG API Machinery]

For initial installations, see the [Setup topics][] in the Kubernetes
documentation.

To upgrade to this release from a previous version, take any actions required
[Before Upgrading](#before-upgrading).

For more information about the release and for the latest documentation,
see the [Kubernetes documentation](https://kubernetes.io/docs/home/).