- Added `client-go` support for upgrading subresource fields from client-side to server-side management. ([#123484](https://github.com/kubernetes/kubernetes/pull/123484), [@erikgb](https://github.com/erikgb))
- Added `exec-interactive-mode` and `exec-provide-cluster-info` flags in kubectl config set-credentials command. ([#122023](https://github.com/kubernetes/kubernetes/pull/122023), [@ardaguclu](https://github.com/ardaguclu))

  Skip standalone VM when reconciling LoadBalancer ([#97635](https://github.com/kubernetes/kubernetes/pull/97635), [@nilo19](https://github.com/nilo19)) [SIG Cloud Provider]
- Using exec auth plugins with kubectl no longer results in warnings about constructing many client instances from the same exec auth config. ([#97857](https://github.com/kubernetes/kubernetes/pull/97857), [@liggitt](https://github.com/liggitt)) [SIG API Machinery and Auth]

### Other (Cleanup or Flake)

- "Removed the ability to run `kubectl exec [POD] [COMMAND]` without a `--` separator.
  The `--` separator has been recommended since the Kubernetes v1.18 release, which also deprecated the legacy way of invoking `kubectl exec`.
  

- Kubelet metrics have been changed to buckets. 
  For example the exec/{podNamespace}/{podID}/{containerName} is now just exec. ([#87913](https://github.com/kubernetes/kubernetes/pull/87913), [@cheftako](https://github.com/cheftako)) [SIG Node]

* CRI: Add stdout/stderr fields to Exec and Attach requests. ([#52686](https://github.com/kubernetes/kubernetes/pull/52686), [@yujuhong](https://github.com/yujuhong))
* Cluster Autoscaler 1.0.0 ([#53005](https://github.com/kubernetes/kubernetes/pull/53005), [@mwielgus](https://github.com/mwielgus))

- Changed `kubectl exec` syntax to require `--` before the command. The form `kubectl exec [POD] [COMMAND]` is no longer supported; use `kubectl exec [POD] -- [COMMAND]` instead. ([#133841](https://github.com/kubernetes/kubernetes/pull/133841), [@yangjunmyfm192085](https://github.com/yangjunmyfm192085))

- Kubelet metrics have been changed to buckets. For example the `exec/{podNamespace}/{podID}/{containerName}` is now just exec. ([#87913](https://github.com/kubernetes/kubernetes/pull/87913), [@cheftako](https://github.com/cheftako)) [SIG Node]

60,MST:-420,PDT:-420,PST:-480};function ka(e){var a,t,s,n,r,d,i=e._i,_=Ma.exec(i)||ha.exec(i);if(_){for(L(e).iso=!0,a=0,t=La.length;a<t;a++)if(La[a][1].exec(_[1])){n=La[a][0],s=!1!==La[a][2];break}if(null==n)return void(e._isValid=!1);if(_[3]){for(a=0,t=Ya.length;a<t;a++)if(Ya[a][1].exec(_[3])){r=(_[2]||" ")+Ya[a][0];break}if(null==r)return void(e._isValid=!1)}if(!s&&null!=r)return void(e._isValid=!1);if(_[4]){if(!ca.exec(_[4]))return void(e._isValid=!1);d="Z"}e._f=n+(r||"")+(d||""),va(e)}else e...

- Kubelet metrics have been changed to buckets. 
  For example the exec/{podNamespace}/{podID}/{containerName} is now just exec. ([#87913](https://github.com/kubernetes/kubernetes/pull/87913), [@cheftako](https://github.com/cheftako)) [SIG Node]

- Kubelet metrics have been changed to buckets. 
  For example the exec/{podNamespace}/{podID}/{containerName} is now just exec. ([#87913](https://github.com/kubernetes/kubernetes/pull/87913), [@cheftako](https://github.com/cheftako)) [SIG Node]