- Remove the deprecated flag `--experimental-check-node-capabilities-before-mount`. With CSI now GA, there is a better alternative. Remove any use of  `--experimental-check-node-capabilities-before-mount` from your kubelet scripts or manifests. ([#104732](https://github.com/kubernetes/kubernetes/pull/104732), [@mengjiao-liu](https://github.com/mengjiao-liu))...

- The Kubelet's `--experimental-allocatable-ignore-eviction` option is now marked as deprecated. ([#91578](https://github.com/kubernetes/kubernetes/pull/91578), [@knabben](https://github.com/knabben)) [SIG Node]

  /**
   * The HTTP <a
   * href="https://wicg.github.io/user-preference-media-features-headers/#sec-ch-prefers-color-scheme">{@code
   * Sec-CH-Prefers-Color-Scheme}</a> header field name.
   *
   * <p>This header is experimental.
   *
   * @since 31.0
   */
  public static final String SEC_CH_PREFERS_COLOR_SCHEME = "Sec-CH-Prefers-Color-Scheme";

  /**
   * The HTTP <a

- kube-controller-manager
  - The deprecated `--insecure-experimental-approve-all-kubelet-csrs-for-group` flag has been removed.
- kubelet

GlobalMemoryStatusEx to get total physical memory on windows nodes. ([#57124](https://github.com/kubernetes/kubernetes/pull/57124), [@JiangtianLi](https://github.com/JiangtianLi))

* Windows containers now support experimental Hyper-V isolation by setting annotation `experimental.windows.kubernetes.io/isolation-type=hyperv` and feature gates HyperVContainer. At the moment this function only supports one container per pod. ([#58751](https://github.com/kubernetes/kubernetes/pull/58751), [@feisk...

   * files with extension "PSB" are in a distinct but related format).
   *
   * <p>This is a more recent replacement for the older, experimental type {@code x-photoshop}: <a
   * href="http://tools.ietf.org/html/rfc2046#section-6">RFC-2046.6</a>.
   *
   * @since 15.0
   */

* Fixed 'Schedulercache is corrupted' error in kube-scheduler ([#55262](https://github.com/kubernetes/kubernetes/pull/55262), [@liggitt](https://github.com/liggitt))
* Fix hyperkube kubelet --experimental-dockershim ([#55335](https://github.com/kubernetes/kubernetes/pull/55335), [@ivan4th](https://github.com/ivan4th))

- Updated `kubeadm` to use the `InitialCorruptCheck=true` etcd feature gate instead of the deprecated `--experimental-initial-corrupt-check` flag. Also replaced the use of `--experimental-watch-progress-notify-interval` with its graduated counterpart `--watch-progress-notify-interval`. ([#132838](https://github.com/kubernetes/kubernetes/pull/132838), [@AwesomePatrol](https://github.com/AwesomePatrol))...

- HA improvements:
  - `kubeadm join --experimental-control-plane` can now be used to join control plane instances to an existing cluster.
  - `kubeadm upgrade node experimental-control-plane` can now be used for upgrading secondary control plane instances created with `kubeadm join --experimental-control-plane`.
Multi-arch support (EXPERIMENTAL):

- Kubeadm: add the flag "--experimental-initial-corrupt-check" to etcd static Pod manifests to ensure etcd member data consistency ([#109076](https://github.com/kubernetes/kubernetes/pull/109076), [@neolit123](https://github.com/neolit123)) [SIG Cluster Lifecycle]