- CustomResourceDefinitions added support for marking versions as deprecated by setting `spec.versions[*].deprecated` to `true`, and for optionally overriding the default deprecation warning with a `spec.versions[*].deprecationWarning` field. ([#92329](https://github.com/kubernetes/kubernetes/pull/92329), [@liggitt](https://github.com/liggitt)) [SIG API Machinery]

- When using `kubectl replace` (or the equivalent API call) on a Service, the caller no longer needs to do a read-modify-write cycle to fetch the allocated values for `.spec.clusterIP` and `.spec.ports[].nodePort`.  Instead the API server will automatically carry these forward from the original object when the new object does not specify them. ([#104674](https://github.com/kubernetes/kubernetes/pull/104674), [@thockin](https://github.com/thockin))...

import java.util.Arrays;
import java.util.Collections;
import java.util.Iterator;
import java.util.List;
import java.util.zip.Adler32;
import java.util.zip.CRC32;
import java.util.zip.Checksum;
import javax.crypto.spec.SecretKeySpec;
import org.jspecify.annotations.Nullable;

/**
 * Static methods to obtain {@link HashFunction} instances, and other static hashing-related
 * utilities.
 *

  // We need to test that our method behaves like the JDK method.
  @SuppressWarnings("InlineMeInliner")
  public void testCompare() {
    for (boolean x : VALUES) {
      for (boolean y : VALUES) {
        // note: spec requires only that the sign is the same
        assertWithMessage("%s, %s", x, y)
            .that(Booleans.compare(x, y))
            .isEqualTo(Boolean.valueOf(x).compareTo(y));
      }
    }
  }

   */
  public static final MediaType XML_UTF_8 = createConstantUtf8(TEXT_TYPE, "xml");

  /**
   * As described in <a href="https://w3c.github.io/webvtt/#iana-text-vtt">the VTT spec</a>, this is
   * used for Web Video Text Tracks (WebVTT) files, used with the HTML5 track element.
   *
   * @since 20.0
   */
  public static final MediaType VTT_UTF_8 = createConstantUtf8(TEXT_TYPE, "vtt");

    Kubernetes-managed containers on the node.
  * It is not compatible with CNI plugins that do not conform to the
    [error handling behavior in the spec](https://github.com/containernetworking/cni/blob/master/SPEC.md#network-configuration-list-error-handling).
    The plugins are being updated to resolve this issue ([#43488](https://github.com/kubernetes/kubernetes/issues/43488)).

## Changelog since v1.15.3

### Other notable changes

* Restores compatibility with kubectl client-side validation when structural schemas are present in a CRD which sets spec.preserveUnknownFields=true ([#82666](https://github.com/kubernetes/kubernetes/pull/82666), [@liggitt](https://github.com/liggitt))

    checkNotNull(domain);
    if (isEmpty()) {
      return ImmutableSortedSet.of();
    }
    Range<C> span = span().canonical(domain);
    if (!span.hasLowerBound()) {
      // according to the spec of canonical, neither this ImmutableRangeSet nor
      // the range have a lower bound
      throw new IllegalArgumentException(
          "Neither the DiscreteDomain nor this range set are bounded below");

- 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))

- The alpha feature `AnyVolumeDataSource` enables PersistentVolumeClaim objects to use the spec.dataSource field to reference a custom type as a data source ([#88636](https://github.com/kubernetes/kubernetes/pull/88636), [@bswartz](https://github.com/bswartz)) [SIG Apps and Storage]