- Fixes bug where OpenAPIV2 config was used instead of V3, and gives clear error message about OpenAPIV3 requirement ([#120612](https://github.com/kubernetes/kubernetes/pull/120612), [@alexzielenski](https://github.com/alexzielenski)) [SIG API Machinery]

* The `rbac/v1alpha1`, `settings/v1alpha1`, and `scheduling/v1alpha1` APIs are disabled by default.

  kube-proxy is responsible for, rather than only counting the number of rules
  that it re-synced on the last sync. The new `sync_proxy_rules_iptables_last`
  metric now gives the latter number. ([#119140](https://github.com/kubernetes/kubernetes/pull/119140), [@danwinship](https://github.com/danwinship)) [SIG Network]

- Kubelet: fixed nil pointer in reflector start for standalone mode. ([#113501](https://github.com/kubernetes/kubernetes/pull/113501), [@pacoxu](https://github.com/pacoxu))
- Kubelet: when there are multi option lines in /etc/resolv.conf, merge all options into one line in a pod with the `Default` DNS policy. ([#112414](https://github.com/kubernetes/kubernetes/pull/112414), [@pacoxu](https://github.com/pacoxu)) [SIG Network and Node]

- Promoted plugin subcommand resolution feature to `beta`. ([#120663](https://github.com/kubernetes/kubernetes/pull/120663), [@ardaguclu](https://github.com/ardaguclu))