([#123413](https://github.com/kubernetes/kubernetes/pull/123413), [@seans3](https://github.com/seans3))
- A new flag called `custom` has been introduced in `kubectl debug`, allowing users to customize pre-defined profiles. ([#120346](https://github.com/kubernetes/kubernetes/pull/120346), [@ardaguclu](https://github.com/ardaguclu))

- Improve logging of `APIService` availability changes in kube-apiserver. ([#101420](https://github.com/kubernetes/kubernetes/pull/101420), [@sttts](https://github.com/sttts))
- Introduce a feature gate `DisableCloudProviders` allowing to disable cloud-provider initialization in KAPI, KCM and kubelet.

- Introduces new functionality to the client-go's `List` method, allowing users to enable API streaming. To activate this feature, users can set the `client-go.WatchListClient` feature gate.
  

  while (*pos < static_cast<size_t>(graph->graph.num_node_ids())) {
    Node* node = graph->graph.FindNodeId(*pos);
    // FindNodeId() returns nullptr for nodes that have been deleted.
    // We aren't currently allowing nodes to be deleted, but it is safer
    // to still check.
    if (node != nullptr) return ToOperation(node);
    *pos += 1;
  }

  // No more nodes.
  return nullptr;
}

   */

  /**
   * A future in {@link TestFutureBatch} that also has a name for debugging purposes and a {@code
   * finisher}, a task that will complete the future in some fashion when it is called, allowing for
   * testing both before and after the completion of the future.
   */
  @J2ktIncompatible
  @GwtIncompatible // used only in GwtIncompatible tests
  private static final class TestFuture {

   */

  /**
   * A future in {@link TestFutureBatch} that also has a name for debugging purposes and a {@code
   * finisher}, a task that will complete the future in some fashion when it is called, allowing for
   * testing both before and after the completion of the future.
   */
  @J2ktIncompatible
  @GwtIncompatible // used only in GwtIncompatible tests
  private static final class TestFuture {

  - [stable] `kubectl` no longer applies defaults before sending objects to the server in create and update requests, allowing the server to apply the defaults. ([kubernetes/features#55](https://github.com/kubernetes/enhancements/issues/55))

## Known Issues

- This change picks up the latest GCE pinhole firewall feature, which introduces destination-ranges in the ingress firewall-rules. It restricts the access to the backend IPs via allowing traffic via allowing traffic through ILB or NetLB IP only. This change does NOT change the existing ILB or NetLB behavior. ([#109510](https://github.com/kubernetes/kubernetes/pull/109510), [@sugangli](https://github.com/sugangli)) [SIG API Machinery, Architecture,...

### Juju
* The kubernetes-master, kubernetes-worker and kubeapi-load-balancer charms have gained an nrpe-external-master relation, allowing the integration of their monitoring in an external Nagios server. ([#41923](https://github.com/kubernetes/kubernetes/pull/41923), [@Cynerva](https://github.com/Cynerva))

- Add --permit-address-sharing flag to `kube-apiserver` to listen with `SO_REUSEADDR`. While allowing to listen on wildcard IPs like 0.0.0.0 and specific IPs in parallel, it avoids waiting for the kernel to release socket in `TIME_WAIT` state, and hence, considerably reducing `kube-apiserver` restart times under certain conditions. ([#93861](htt...