[@rosti](https://github.com/rosti)) Courtesy of SIG Cluster Lifecycle, SIG Release, and SIG Testing

- The `EndpointSliceTerminatingCondition` feature gate was graduated to GA. The gate is now locked and will be removed in v1.28. ([#113351](https://github.com/kubernetes/kubernetes/pull/113351), [@andrewsykim](https://github.com/andrewsykim))
- `DynamicKubeletConfig` feature gate has been removed from the API server.
  Dynamic kubelet reconfiguration now can't be used even when older nodes are still

- Promoted the `AuthorizeWithSelectors` and `AuthorizeNodeWithSelectors` feature gates to stable and locked on. ([#132656](https://github.com/kubernetes/kubernetes/pull/132656), [@liggitt](https://github.com/liggitt)) [SIG API Machinery, Auth and Testing]

- Feature gates for RemoteCommand (kubectl exec, cp, and attach) over WebSockets are now enabled by default (Beta).
  - Server-side feature gate: TranslateStreamCloseWebsocketRequests
  - Client-side (kubectl) feature gate: KUBECTL_REMOTE_COMMAND_WEBSOCKETS

- Remove GAed feature gates OpenAPIV3 ([#121255](https://github.com/kubernetes/kubernetes/pull/121255), [@tukwila](https://github.com/tukwila)) [SIG API Machinery and Testing]
- Remove GAed feature gates SeccompDefault ([#121246](https://github.com/kubernetes/kubernetes/pull/121246), [@tukwila](https://github.com/tukwila)) [SIG Node]

- [Ephemeral Containers](https://kubernetes.io/docs/concepts/workloads/pods/ephemeral-containers/) are now generally available (GA). The `EphemeralContainers` feature gate is always enabled and should be removed from `--feature-gates` flag on the kube-apiserver and the kubelet command lines. The `EphemeralContainers` feature gate is [deprecated and scheduled for removal](https://kubernetes.io/docs/reference/using-api/deprecation-policy/#deprecation)  in a future release. ([#111402](https://gith...

* The `DefaultFeatureGate` package variable now only exposes readonly feature gate methods. Methods for mutating feature gates have moved into a `MutableFeatureGate` interface and are accessible via the `DefaultMutableFeatureGate` package variable. Only top-level commands and options setup should access `DefaultMutableFeatureGate`. ([#71302](https://...

* The alpha Accelerators feature gate is deprecated and will be removed in v1.11. Please use device plugins ([https://github.com/kubernetes/enhancements/issues/368](https://github.com/kubernetes/enhancements/issues/368)) instead. They can be enabled using the DevicePlugins feature gate. ([#57384](https://github.com/kubernetes/kubernetes/pull/57384), [@mindprince](https://github.com/mindprince))

  * You can continue to use the alpha version of this feature (with one caveat -- see below), in which you specify affinity requests using Pod annotations, in 1.6 by including `AffinityInAnnotations=true` in `--feature-gates`, such as `--feature-gates=FooBar=true,AffinityInAnnotations=true`. Otherwise, you must modify your PodSpecs that currently use the `scheduler.alpha.kubernetes.io/affinity` annotation on Pod, to instead use the `affinity` field in the PodSpec. Support for the annotation...

- a new `EndpointSliceProxying` feature gate has been added to control the use of EndpointSlices in kube-proxy. The EndpointSlice feature gate that used to control this behavior no longer affects kube-proxy. This feature has been disabled by default. ([#86137](https://github.com/kubernetes/kubernetes/pull/86137), [@robscott](https://github.com/robscott))...