* kubectl apply now supports explicitly clearing values not present in the config by setting them to null ([#40630](https://github.com/kubernetes/kubernetes/pull/40630), [@liggitt](https://github.com/liggitt))

- Any Prometheus queries that match `pod_name` and `container_name` labels (e.g. cadvisor or kubelet probe metrics) should be updated to use `pod` and `container` instead. `pod_name` and `container_name` labels will be present alongside `pod` and `container` labels for one transitional release and removed in the future.
([#69099](https://github.com/kubernetes/kubernetes/pull/69099), [@ehashman](https://github.com/ehashman))

## Deprecations

* Allow ScaleIO volumes to be provisioned without having to first manually create /dev/disk/by-id path on each kubernetes node (if not already present) ([#66174](https://github.com/kubernetes/kubernetes/pull/66174), [@ddebroy](https://github.com/ddebroy))

 - Fixed a regression running kubectl commands with  --local or --dry-run flags when no kubeconfig file is present ([#90243](https://github.com/kubernetes/kubernetes/pull/90243), [@soltysh](https://github.com/soltysh)) [SIG API Machinery, CLI and Testing]

- Introduction of a new "sync_proxy_rules_no_local_endpoints_total" proxy metric. This metric represents the number of services with no internal endpoints. The "traffic_policy" label will contain both "internal" or "external". ([#108930](https://github.com/kubernetes/kubernetes/pull/108930), [@MaxRenaud](https://github.com/MaxRenaud))

* Fix a race condition in which kubeadm only waits for the kubelets kubeconfig file when it has performed the TLS bootstrap, but wasn't waiting for certificates to be present in the filesystem ([#72030](https://github.com/kubernetes/kubernetes/pull/72030), [@ereslibre](https://github.com/ereslibre))

* The Categories []string field on discovered API resources represents the list of group aliases (e.g. "all") that each resource belongs to. ([#43338](https://github.com/kubernetes/kubernetes/pull/43338), [@fabianofranz](https://github.com/fabianofranz))

- During device plugin allocation, resources requested by the pod can only be allocated if the device plugin has registered itself to kubelet AND healthy devices are present on the node to be allocated. If these conditions are not sattsfied, the pod would fail with `UnexpectedAdmissionError` error. ([#117738](https://github.com/kubernetes/kubernetes/pull/117738), [@swatisehgal](https://github.com/swatisehgal)) [SIG Node...

  -  AWS Cloud Provider creates default LoadBalancer security group even if annotation [service.beta.kubernetes.io/aws-load-balancer-security-groups] is present ([#87207](https://github.com/kubernetes/kubernetes/pull/87207), [@bhagwat070919](https://github.com/bhagwat070919)) [SIG Cloud Provider]

* Adds the `Categories []string` field to API resources, which represents the list of group aliases (e.g. "all") that every resource belongs to.  ([#43338](https://github.com/kubernetes/kubernetes/pull/43338), [@fabianofranz](https://github.com/fabianofranz))