- Dynamic Resource Allocation (DRA): client-side validation of a ResourceHandle would have accepted a missing DriverName, whereas server-side validation then would have raised an error. ([#124075](https://github.com/kubernetes/kubernetes/pull/124075), [@pohly](https://github.com/pohly))

- The Pod `spec.podOS` field is promoted to GA. The `IdentifyPodOS` feature gate unconditionally enabled, and will no longer be accepted as a `--feature-gates` parameter in 1.27. ([#111229](https://github.com/kubernetes/kubernetes/pull/111229), [@ravisantoshgudimetla](https://github.com/ravisantoshgudimetla))

set ... --local` commands. ([#77267](https://github.com/kubernetes/kubernetes/pull/77267), [@liggitt](https://github.com/liggitt))
- Support for parsing more v1.Taint forms has been added. For example, `key:effect`, `key=:effect-` are now accepted. ([#74159](https://github.com/kubernetes/kubernetes/pull/74159), [@dlipovetsky](https://github.com/dlipovetsky))

### Cloud Provider

* Fixed issue with kubectl proxy so it will now proxy an empty path - e.g. http://localhost:8001 ([#39226](https://github.com/kubernetes/kubernetes/pull/39226), [@luksa](https://github.com/luksa))
* Fixed an issue where commas were not accepted in --from-literal flags for the creation of secrets. ([#35191](https://github.com/kubernetes/kubernetes/pull/35191), [@SamiHiltunen](https://github.com/SamiHiltunen))

     * The value is, e.g.  <br>
     * comment: Accepted referers for API search.
     * @return The value of found property. (NotNull: if not found, exception but basically no way)
     */
    String getApiSearchAcceptReferers();

    /**
     * Get the value for the key 'api.search.accept.referers' as {@link Integer}. <br>
     * The value is, e.g.  <br>
     * comment: Accepted referers for API search.

* Adds a new alpha EventRateLimit admission control that is used to limit the number of event queries that are accepted by the API Server. ([#50925](https://github.com/kubernetes/kubernetes/pull/50925), [@staebler](https://github.com/staebler))

- `e2e.test` now rejects unknown `--provider` values instead of merely warning about them. An empty provider name is not accepted anymore and was replaced by `skeleton` (a provider with no special behavior). ([#73402](https://github.com/kubernetes/kubernetes/pull/73402), [@pohly](https://github.com/pohly))

- The OpenAPI spec and documentation now reflect the 202 Accepted response path for delete requests. Note that this change in the openapi spec may affect some clients that depend on the error paths.  ([#63418](https://github.com/kubernetes/kubernetes/pull/63418), [@roycaihw](https://github.com/roycaihw))

- Kube-apiserver: The NodeRestriction admission plugin now restricts Node labels kubelets are permitted to set when creating a new Node to the `--node-labels` parameters accepted by kubelets in 1.16+. ([#90307](https://github.com/kubernetes/kubernetes/pull/90307), [@liggitt](https://github.com/liggitt)) [SIG Auth and Node]

- Added `.spec.completionMode` field to Job, with accepted values `NonIndexed` (default) and `Indexed`. This is an alpha field and is only honored by servers with the `IndexedJob` feature gate enabled. ([#98441](https://github.com/kubernetes/kubernetes/pull/98441), [@alculquicondor](https://github.com/alculquicondor))...