- Improved how the API server responds to **list** requests where the response format negotiates to Protobuf. List responses in Protobuf are marshalled one element at the time, drastically reducing memory needed to serve large collections. Streaming list responses can be disabled via the `StreamingCollectionEncodingToProtobuf` feature gate. ([#129407](https://github.com/kubernetes/kubernetes/pull/129407), [...

### API Change

* NetworkPolicies can now target specific pods in other namespaces by including both a namespaceSelector and a podSelector in the same peer element. ([#60452](https://github.com/kubernetes/kubernetes/pull/60452), [@danwinship](https://github.com/danwinship))

    <sub-class-of type="application/zip"/>
  </mime-type>

  <!-- can't tell from the root element whether this is fodt, fodp, etc.
     This is a made up general mime to cover the open office flat formats.
      Subtype detection can be done with the document:mime attribute in the root
      element and/or file extensions fodt...-->
  <mime-type type="application/vnd.oasis.opendocument.tika.flat.document">

## Changelog since v1.26.1

## Changes by Kind

### API Change

* audit.k8s.io api group is upgraded from v1beta1 to v1. ([#65891](https://github.com/kubernetes/kubernetes/pull/65891), [@CaoShuFeng](https://github.com/CaoShuFeng))
    * Deprecated element metav1.ObjectMeta and Timestamp are removed from audit Events in v1 version.
    * Default value of option --audit-webhook-version and --audit-log-version will be changed from `audit.k8s.io/v1beta1` to `audit.k8s.io/v1` in release 1.13