- Scheduler volumebinding: leveraged `PreFilterResult` to reduce down to only
  eligible node(s) for pod with bound claim(s) to local `PersistentVolume(s)` ([#109877](https://github.com/kubernetes/kubernetes/pull/109877), [@yibozhuang](https://github.com/yibozhuang))
- Scheduling cycle now terminates immediately when any scheduler plugin returns an 

* Addon manager supports HA masters. ([#55782](https://github.com/kubernetes/kubernetes/pull/55782), [@x13n](https://github.com/x13n))

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      separable from, or merely link (or bind by name) to the interfaces of,
      the Work and Derivative Works thereof.

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- Kube-apiserver: the insecure address flags `--address`, `--insecure-bind-address`, `--port` and `--insecure-port` (inert since 1.20) are removed ([#106859](https://github.com/kubernetes/kubernetes/pull/106859), [@knight42](https://github.com/knight42))

- LoadBalancerIPMode feature is now marked as Beta. ([#123418](https://github.com/kubernetes/kubernetes/pull/123418), [@rikatz](https://github.com/rikatz))

 - `kubeadm`: a separate "super-admin.conf" file is now deployed. The User in `admin.conf` is now bound to a new RBAC Group `kubeadm:cluster-admins` that has `cluster-admin` `ClusterRole` access. The User in `super-admin.conf` is now bound to the `system:masters` built-in super-powers / break-glass Group that can bypass RBAC. Before this change, the default `admin.conf` was bound to `system:masters` Group, which was undesired. Executing `kubeadm init phase kubeconfig all` or just `kubeadm...

    - `apiserver_flowcontrol_lower_limit_seats`: Configured lower bound on number of execution seats available to each priority level
    - `apiserver_flowcontrol_upper_limit_seats`: Configured upper bound on number of execution seats available to each priority level