Every identifier in a program must be declared.
No identifier may be declared twice in the same block, and
no identifier may be declared in both the file and package block.
</p>

<p>
The <a href="#Blank_identifier">blank identifier</a> may be used like any other identifier
in a declaration, but it does not introduce a binding and thus is not declared.

    * You can read more about it in the docs for [Declare Request Example Data](https://fastapi.tiangolo.com/tutorial/schema-extra-example/).
* The attribute `schema_extra` for the internal class `Config` has been replaced by the key `json_schema_extra` in the new `model_config` dict.
    * You can read more about it in the docs for [Declare Request Example Data](https://fastapi.tiangolo.com/tutorial/schema-extra-example/).

- Pods which set `hostNetwork: true` and declare ports, get the `hostPort` field set automatically. Previously this would happen in the PodTemplate of a Deployment, DaemonSet or other workload API.  Now `hostPort` will only be set when an actual Pod is being created.  If this presents a problem,...

- Kubeadm: explicitly set `priority` for static pods with `priorityClassName: system-node-critical` ([#119118](https://github.com/kubernetes/kubernetes/pull/119118), [@champtar](https://github.com/champtar)) [SIG Cluster Lifecycle]
- Only declare Job as finished after removing all Pod finalizers to avoid orphan Pods ([#119164](https://github.com/kubernetes/kubernetes/pull/119164), [@alculquicondor](https://github.com/alculquicondor)) [SIG Apps and Testing]

- Fix delete pod declare no controllor note. ([#120159](https://github.com/kubernetes/kubernetes/pull/120159), [@Ithrael](https://github.com/Ithrael)) [SIG CLI]

### Bug or Regression

- Kubectl explain should correctly work for all resources ([#118876](https://github.com/kubernetes/kubernetes/pull/118876), [@atiratree](https://github.com/atiratree)) [SIG CLI]
- Only declare Job as finished after removing all Pod finalizers to avoid orphan Pods ([#119160](https://github.com/kubernetes/kubernetes/pull/119160), [@alculquicondor](https://github.com/alculquicondor)) [SIG Apps and Testing]

	**Action Required:** When upgrading to Kubernetes 1.7 (and a [network plugin](https://kubernetes.io/docs/tasks/administer-cluster/declare-network-policy/) that supports the new NetworkPolicy v1 semantics), you should consider the following.

### Other notable changes

* Remove rescheduler from master. ([#64364](https://github.com/kubernetes/kubernetes/pull/64364), [@ravisantoshgudimetla](https://github.com/ravisantoshgudimetla))
* Declare IPVS-based kube-proxy GA ([#58442](https://github.com/kubernetes/kubernetes/pull/58442), [@m1093782566](https://github.com/m1093782566))

* Fix port number and default Stackdriver Metadata Agent in daemon set configuration. ([#56576](https://github.com/kubernetes/kubernetes/pull/56576), [@kawych](https://github.com/kawych))
* Declare ipvs proxier beta ([#56623](https://github.com/kubernetes/kubernetes/pull/56623), [@m1093782566](https://github.com/m1093782566))

* kubectl could scale custom resource again ([#81342](https://github.com/kubernetes/kubernetes/pull/81342), [@knight42](https://github.com/knight42))
* a CSI driver that supports ephemeral inline volumes must explicitly declare that by providing a CSIDriver object where the new "mode" field is set to "ephemeral" or "persistent+ephemeral" ([#80568](https://github.com/kubernetes/kubernetes/pull/80568), [@pohly](https://github.com/pohly))