- Kubeadm: add support for dry running `kubeadm join`. The new flag `kubeadm join --dry-run` is similar to the existing flag for `kubeadm init/upgrade` and allows you to see what changes would be applied. ([#103027](https://github.com/kubernetes/kubernetes/pull/103027), [@Haleygo](https://github.com/Haleygo))

- Kubeadm: deprecated command "alpha selfhosting pivot" is now removed. ([#97627](https://github.com/kubernetes/kubernetes/pull/97627), [@knight42](https://github.com/knight42))

 - The default Bootstrap Token created with `kubeadm init` v1.8 expires
 and is deleted after 24 hours by default to limit the exposure of the
 valuable credential. You can create a new Bootstrap Token with
 `kubeadm token create` or make the default token permanently valid by specifying
 `--token-ttl 0` to `kubeadm init`. The default token can later be deleted with
 `kubeadm token delete`.

- Kubeadm: Added support for additional authentication strategies in `kubeadm join` with discovery/kubeconfig file: client-go authentication plugins (`exec`), `tokenFile`, and `authProvider.` ([#110553](https://github.com/kubernetes/kubernetes/pull/110553), [@tallaxes](https://github.com/tallaxes))

      - [**Kubectl**](#kubectl)
    - [**Cluster Lifecycle**](#cluster-lifecycle-3)
      - [**API Server**](#api-server)
      - [**Cloud Provider Integration**](#cloud-provider-integration)
      - [**Kubeadm**](#kubeadm)
      - [**Juju**](#juju)
      - [**Other**](#other-2)
      - [**GCP**](#gcp)
    - [**Instrumentation**](#instrumentation-1)
      - [**Audit**](#audit-2)
      - [**Other**](#other-3)

- Kubeadm: fixed an etcd learner-mode bug by preparing an etcd static pod manifest before promoting ([#115038](https://github.com/kubernetes/kubernetes/pull/115038), [@tobiasgiese](https://github.com/tobiasgiese))

- Kubeadm: graduated the kubeadm specific feature gate `WaitForAllControlPlaneComponents` to GA. The feature gate is was locked to always be enabled and on node initialization kubeadm performed a health check for all control plane components and not only the `kube-apiserver`....

- Kubeadm: add `--feature-gates` flag for `kubeadm upgrade node` ([#118316](https://github.com/kubernetes/kubernetes/pull/118316), [@SataQiu](https://github.com/SataQiu)) [SIG Cluster Lifecycle]

* kubeadm: Fix a bug where `kubeadm join` would wait 5 seconds without doing anything. Now `kubeadm join` executes the tasks immediately. ([#48737](https://github.com/kubernetes/kubernetes/pull/48737), [@mattmoyer](https://github.com/mattmoyer))

- Kubeadm: removed the `UnversionedKubeletConfigMap` feature gate. The feature has been GA and locked to enabled since `v1.25`. ([#113448](https://github.com/kubernetes/kubernetes/pull/113448), [@pacoxu](https://github.com/pacoxu))