* special handling of the user `*` in RoleBinding and ClusterRoleBinding objects is removed in v1beta1. To match all users, explicitly bind to the group `system:authenticated` and/or `system:unauthenticated`. Existing v1alpha1 bindings to the user `*` are automatically converted to the group `system:authenticated`. ([#38981](https://github.com/kubernetes/kubernetes/pull/38981), [@liggitt](https://github.com/liggitt))

### Scheduling
* **Multiple schedulers**

- No-op and GC related updates to cluster trust...

* The OpenID Connect authenticator can now use a custom prefix, or omit the default prefix, for username and groups claims through the --oidc-username-prefix and --oidc-groups-prefix flags. For example, the authenticator can map a user with the username "jane" to "google:jane" by supplying the "google:" username prefix. ([#50875](https://github.com/kubernetes/kubernetes/pull/50875),...

- Fix a bug in cronjob controller...

  * API requests using impersonation now include the system:authenticated group in the impersonated user automatically. ([#44076](https://github.com/kubernetes/kubernetes/pull/44076), [@liggitt](https://github.com/liggitt))

- Fix a bug in cronjob controller...

- Fix 1.28.0 regression...

- Fix a bug in cronjob controller...

* Kubelet now proxies container streaming between apiserver and container runtime. The connection between kubelet and apiserver is authenticated. Container runtime should change streaming server to serve on localhost, to make the connection between kubelet and container runtime local. ([#64006](https://github.com/kubernetes/kubernetes/pull/64006), [@Random-Liu](https://github.com/Random-Liu))...

  // +optional
  optional ServiceStatus status = 3;
}

// ServiceAccount binds together:
// * a name, understood by users, and perhaps by peripheral systems, for an identity
// * a principal that can be authenticated and authorized
// * a set of secrets
message ServiceAccount {
  // Standard object's metadata.
  // More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#metadata