* 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))

* 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))

- 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))...

#### kube-scheduler:
- A kubescheduler.config.k8s.io/v1alpha2 configuration file version is now accepted, with support for multiple scheduling profiles ([#87628](https://github.com/kubernetes/kubernetes/pull/87628), [@alculquicondor](https://github.com/alculquicondor)) [SIG Scheduling]

  - The `--experimental-encryption-provider-config` flag is deprecated in favor of `--encryption-provider-config`. The old flag is accepted with a warning but will be removed in 1.14. ([#71206](https://github.com/kubernetes/kubernetes/pull/71206),...

- 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 `AdmissionConfiguration` type accepted by `--admission-control-config-file` has been promoted to `apiserver.config.k8s.io/v1` with no schema changes. ([#85098](https://github.com/kubernetes/kubernetes/pull/85098), [@liggitt](https://github.com/liggitt))

  name of controllers that can be turned on/off that are passed to the `--controllers`
  flag (e.g., `pod-garbage-collector-controller`). The old names (eg `podgc`) are
  also accepted and aliased to the new names. ([#115813](https://github.com/kubernetes/kubernetes/pull/115813), [@atiratree](https://github.com/atiratree))
- `kubeadm`: Introduced a new feature gate `UpgradeAddonsBeforeControlPlane` to

   ([#122745](https://github.com/kubernetes/kubernetes/pull/122745), [@kannon92](https://github.com/kannon92))

- A pod that the Kubelet rejects was still considered as being accepted for a brief period of time after rejection, which might cause some pods to be rejected briefly that could fit on the node.  A pod that is still terminating (but has status indicating it has failed) may also still be consuming resources and so should...