- Scheduler Policy API has a new recommended apiVersion `apiVersion: kubescheduler.config.k8s.io/v1` which is consistent with the scheduler API group `kubescheduler.config.k8s.io`. It holds the same API as the old apiVersion `apiVersion: v1`. ([#83578](https://github.com/kubernetes/kubernetes/pull/83578), [@Huang-Wei](https://github.com/Huang-Wei))

- kube-scheduler dropped support for configuration files with apiVersion `componentconfig/v1alpha1`. Ensure kube-scheduler is configured using command-line flags or a configuration file with apiVersion `kubescheduler.config.k8s.io/v1alpha1` before upgrading to 1.13.
- kubectl

KubeProxyConfiguration Before:

```
apiVersion: kubeproxy.config.k8s.io/v1alpha1
kind: KubeProxyConfiguration
**featureGates: "SupportIPVSProxyMode=true"**
```

KubeProxyConfiguration After:

```
apiVersion: kubeproxy.config.k8s.io/v1alpha1
kind: KubeProxyConfiguration
**featureGates:**
**  SupportIPVSProxyMode: true**

* event object references with apiversion will now report an apiversion. ([#63913](https://github.com/kubernetes/kubernetes/pull/63913), [@deads2k](https://github.com/deads2k))

    * Action required: The following clusterrole and clusterrolebinding should be applied:
    ```
         kind: List
         apiVersion: v1
         items:
         - apiVersion: rbac.authorization.k8s.io/v1
           kind: ClusterRole
           metadata:
             labels:
               kubernetes.io/cluster-service: "true"

// +structType=atomic
message LocalObjectReference {
  // Name of the referent.
  // More info: https://kubernetes.io/docs/concepts/overview/working-with-objects/names/#names
  // TODO: Add other useful fields. apiVersion, kind, uid?
  // +optional
  optional string name = 1;
}

// Local represents directly-attached storage with node affinity (Beta feature)
message LocalVolumeSource {

  - `response.patch` and `response.patchType` are not permitted from validating admission webhooks
  - `apiVersion: "admission.k8s.io/v1"` is required
  - `kind: "AdmissionReview"` is required

- Fixed an issue with missing `apiVersion/kind` in object data sent to admission webhooks ([#74448](https://github.com/kubernetes/kubernetes/pull/74448), [@liggitt](https://github.com/liggitt))

    ```yaml
    kind: NetworkPolicy
    apiVersion: networking.k8s.io/v1
    metadata:
      name: default-deny
    spec:
      podSelector:
    ```

- Fix `kubectl drain ignore` daemonsets and others. ([#87361](https://github.com/kubernetes/kubernetes/pull/87361), [@zhouya0](https://github.com/zhouya0)) [SIG CLI]
- Fix missing "apiVersion" for "involvedObject" in Events for Nodes. ([#87537](https://github.com/kubernetes/kubernetes/pull/87537), [@uthark](https://github.com/uthark)) [SIG Apps and Node]