* Copy and display source location prominently on Kubernetes instances ([#27840](https://github.com/kubernetes/kubernetes/pull/27840), [@zmerlynn](https://github.com/zmerlynn))
* AWS/GCE: Spread PetSet volume creation across zones, create GCE volumes in non-master zones ([#27553](https://github.com/kubernetes/kubernetes/pull/27553), [@justinsb](https://github.com/justinsb))

- For volumes that allow attaches across multiple nodes, attach and detach operations across different nodes are now executed in parallel. ([#89240](https://github.com/kubernetes/kubernetes/pull/89240), [@verult](https://github.com/verult)) [SIG Apps, Node and Storage]

- For volumes that allow attaches across multiple nodes, attach and detach operations across different nodes are now executed in parallel. ([#89241](https://github.com/kubernetes/kubernetes/pull/89241), [@verult](https://github.com/verult)) [SIG Apps, Node and Storage]

parameter in kubeadm has been updated to drop an unnecessary redirection from ci/latest.txt to ci-cross/latest.txt. Users should know exactly where the builds are stored on Google Cloud storage buckets from now on. For example for 1.9 and 1.10, users can specify ci/latest-1.9 and ci/latest-1.10 as the CI build jobs what build images correctly updates those. The CI jobs for master update the ci-cross/latest location, so if you are looking for latest master builds, then the correct parameter to use...

    assertThat(response.code).isEqualTo(200)
    assertThat(response.body.string()).isEqualTo("secure content")
  }

  /**
   * Verifies the null-handshake fix holds across multiple sequential cache writes, confirming
   * it is not a one-time race condition.
   *
   * https://github.com/square/okhttp/issues/8962
   */
  @Test
  fun multipleHttpsRequestsWithNullHandshakeAllSucceed() {

- Kubeadm now respects the custom image registry configuration across joins and upgrades. Kubeadm passes the custom registry to the kubelet for a custom pause container. ([#70603](https://github.com/kubernetes/kubernetes/pull/70603), [@chuckha](https://github.com/chuckha))

  Fixes a fatal crash (concurrent map read/write) in `NewCompositedCompilerFromTemplate`.
  
  The `NewCompositedCompilerFromTemplate` function previously performed a shallow copy of `CompositionEnv`, sharing the `MapType` pointer across all compilers. Under high concurrency, this caused a race condition when `FindStructFieldType` (reader) and `AddField` (writer) accessed `MapType.Fields` simultaneously, leading to an APIServer panic.
  

- Resolves a performance regression in default 1.31+ configurations, related to the ConsistentListFromCache feature, where rapid create / update API requests across different namespaces encounter increased latency. ([#130156](https://github.com/kubernetes/kubernetes/pull/130156), [@AwesomePatrol](https://github.com/AwesomePatrol)) [SIG API Machinery]

### Other (Cleanup or Flake)

### Failing Test

- Reverted the change to "support sharing waitingPods across different scheduler profiles". ([#124001](https://github.com/kubernetes/kubernetes/pull/124001), [@kerthcet](https://github.com/kerthcet))

### Bug or Regression

A security issue was discovered in Kubernetes where users may have access to secure endpoints in the control plane network. Kubernetes clusters are only affected if an untrusted user can to modify Node objects and send requests proxying through them.