- Added a new feature gate, `SchedulerQueueingHints` (enabled by default).
  The new feature gate activates a framework for fine-grained filtering of events related to scheduler plugins.

   * **NOTE:** Self-hosting will be the default way to host the control plane in the next release, v1.9

* [alpha] A new `phase` subcommand supports performing only subtasks of the full `kubeadm init` flow. Combined with fine-grained configuration, kubeadm is now more easily consumable by higher-level provisioning tools like kops or GKE. ([#356](https://github.com/kubernetes/enhancements/issues/356), [@luxas](https://github.com/luxas))

- Added a `--topology-manager-policy-options` flag to the kubelet to support fine tuning the topology manager policies. The first policy option, `prefer-closest-numa-nodes`, allows these policies to favor sets of NUMA nodes with shorter distance between nodes when making admission decisions. ([#112914](https://github.com/kubern...