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]

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

- 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]

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

- Kubeadm: Switched to using the new etcd endpoints introduced in 3.5.11 - /livez (for liveness probe) and /readyz (for readyness and startup probe). With this change it is no longer possible to deploy a custom etcd version older than 3.5.11 with kubeadm 1.31. If so, please upgrade etcd to a supported version. ([#124465](https:...

- 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]

etes.io/docs/concepts/workloads/pods/ephemeral-containers/) are now generally available (GA). The `EphemeralContainers` feature gate is always enabled and should be removed from `--feature-gates` flag on the kube-apiserver and the kubelet command lines. The `EphemeralContainers` feature gate is [deprecated and scheduled for removal](https://kubernetes.io/docs/reference/using-api/deprecation-policy/#deprecation)  in a future release. ([#111402](https://github.com/kubernetes/kubernetes/pull/111402),...