* RBAC: The system:kubelet-api-admin cluster role can be used to grant full access to the kubelet API  so integrators can grant this role to the --kubelet-client-certificate credential given to the apiserver. ([#57128](https://github.com/kubernetes/kubernetes/pull/57128), [@liggitt](https://github.com/liggitt))

kubeadm-specific `RootlessControlPlane` feature gate. When you deploy a cluster using this alpha feature, your control plane runs with lower privileges.

A new [v1beta3 configuration API](https://github.com/kubernetes/kubeadm/issues/1796). It [iterates over v1beta2](https://pkg.go.dev/k8s.io/kubernetes/cmd/kubeadm/app/apis/kubeadm/v1beta3) by adding some long requested features and deprecating some existing ones. The `V1beta3` is now the preferred API version; the `v1beta2` API also remains available...