* `kubectl port-forward` now supports specifying a service to port forward to, as in `kubectl port-forward svc/myservice 8443:443`. Additional support has also been added for looking up targetPort for a service, as well as enabling using svc/name to select a pod. ([#59809](https://github.com/kubernetes/kubernetes/pull/59809), [@phsiao](https://github.com/phsiao))

* Ignore pods marked for deletion that exceed their grace period in ResourceQuota ([#46542](https://github.com/kubernetes/kubernetes/pull/46542), [@derekwaynecarr](https://github.com/derekwaynecarr))

- Kubernetes will try to acquire the iptables lock every 100 msec during 5 seconds instead of every second. This is especially useful for environments using kube-proxy in iptables mode with a high churn rate of services. ([#85771](https://github.com/kubernetes/kubernetes/pull/85771), [@aojea](https://github.com/aojea))...

Regenerate the server cert for the admission webhooks. Previously, the CN value could be ignored while generating the server cert for the admission webhook. Now you must set it to the DNS name of the webhook service: `<service.Name>.<service.Namespace>.svc`.([#50476](https://github.com/kubernetes/kubernetes/pull/50476))


#### Custom Resource Definitions (CRDs)
* [alpha] The CustomResourceDefinition API can now optionally

    * "dns" {
    *   "servers": ["10.0.0.10"],
    *   "searches": ["default.svc.cluster.local","svc.cluster.local","cluster.local"],
    *   "options": []
    * }