- PriorityClass resources will no longer be served from `scheduling.k8s.io/v1beta1` and `scheduling.k8s.io/v1alpha1` in v1.17. Migrate use to the `scheduling.k8s.io/v1` API, available since v1.14. Existing persisted data can be retrieved via the `scheduling.k8s.io/v1` API.
  - The `export` query parameter for list API calls, deprecated since v1.14, will be removed in v1.18.

    - [Federation](#federation)
    - [Internal Storage Layer](#internal-storage-layer)
    - [Node Components](#node-components)
    - [kubectl](#kubectl)
    - [RBAC](#rbac)
    - [Scheduling](#scheduling)
    - [Service](#service)
    - [StatefulSet](#statefulset)
    - [Volumes](#volumes)
  - [Notable Features](#notable-features)
    - [Autoscaling](#autoscaling)
    - [DaemonSet](#daemonset)

    - [Storage](#storage-1)
    - [Windows](#windows-1)
    - [Autoscaling](#autoscaling)
    - [API-Machinery](#api-machinery-1)
    - [Network](#network-1)
    - [Azure](#azure-1)
    - [Scheduling](#scheduling)
    - [Other changes](#other-changes)
  - [Non-user-facing Changes](#non-user-facing-changes)
  - [External Dependencies](#external-dependencies)
- [v1.10.0-rc.1](#v1100-rc1)

    - [Cluster provisioning scripts](#cluster-provisioning-scripts)
    - [Client libraries](#client-libraries)
    - [DaemonSet](#daemonset)
    - [kube-proxy](#kube-proxy)
    - [Namespace](#namespace)
    - [Scheduling](#scheduling)
  - [**Notable Features**](#notable-features)
  - [Kubefed](#kubefed)
    - [**Kubernetes API**](#kubernetes-api)
      - [User Provided Extensions](#user-provided-extensions)

  /** http://tools.ietf.org/html/draft-ietf-httpbis-http2-17#section-5.1.1 */
  internal var nextStreamId = if (builder.client) 3 else 2

  private var isShutdown = false

  /** For scheduling everything asynchronous. */
  private val taskRunner = builder.taskRunner

  /** Asynchronously writes frames to the outgoing socket. */
  private val writerQueue = taskRunner.newQueue()

 *  New: Share threads more aggressively between OkHttp's HTTP/2 connections, connection pool,
    web sockets, and cache. OkHttp has a new internal task runner abstraction for managed task
    scheduling. In your debugger you will see new thread names and more use of daemon threads.

 *  Fix: Don't drop callbacks on unexpected exceptions. When an interceptor throws an unchecked

    // Count how long it actually took to return; we'll accept any number between the expected delay
    // and the approximate actual delay, to be robust to variance in thread scheduling.
    char overWaitNanosFirstDigit =
        Long.toString(thread.timeSpentBlocked - MILLISECONDS.toNanos(longWait ? 5000 : 3000))
            .charAt(0);
    if (overWaitNanosFirstDigit < '4') {

### Action Required

* Add direct serializer ([#26251](https://github.com/kubernetes/kubernetes/pull/26251), [@caesarxuchao](https://github.com/caesarxuchao))
* Add a NodeCondition "NetworkUnavailable" to prevent scheduling onto a node until the routes have been created  ([#26415](https://github.com/kubernetes/kubernetes/pull/26415), [@wojtek-t](https://github.com/wojtek-t))

    // Count how long it actually took to return; we'll accept any number between the expected delay
    // and the approximate actual delay, to be robust to variance in thread scheduling.
    char overWaitNanosFirstDigit =
        Long.toString(thread.timeSpentBlocked - MILLISECONDS.toNanos(longWait ? 5000 : 3000))
            .charAt(0);
    if (overWaitNanosFirstDigit < '4') {

  - [stable] Automated docker validation results posted to https://k8s-testgrid.appspot.com/docker [kubernetes/features#57](https://github.com/kubernetes/enhancements/issues/57)
- **Scheduling**