* API fields previously capable of storing and returning either `[]` and `null` via JSON API requests (for example, the Endpoints `subsets` field) can now store only `null` when created using the protobuf content-type or stored in etcd using protobuf serialization (the default in 1.6+). JSON API clients should tolerate `null` values for such fields, and treat `null` and `[]` as equivalent in meaning unless specifically documented otherwise...

...

type T int
func (t T) M() { print(t) }

t := new(T)
s := S{T: t}
f := t.M                    // receiver *t is evaluated and stored in f
g := s.M                    // receiver *(s.T) is evaluated and stored in g
*t = 42                     // does not affect stored receivers in f and g
</pre>

<p>
The type <code>T</code> may be an interface or non-interface type.
</p>

<p>

    * API fields previously capable of storing and returning either `[]` and `null` via JSON API requests (for example, the Endpoints `subsets` field) can now store only `null` when created using the protobuf content-type or stored in etcd using protobuf serialization (the default in 1.6+). JSON API clients should tolerate `null` values for such fields, and treat `null` and `[]` as equivalent in meaning unless specifically documented otherwise...

  // If not provided, the empty value is passed to the associated CSI driver
  // which will determine the default filesystem to apply.
  // +optional
  optional string fsType = 3;

  // volumeAttributes stores driver-specific properties that are passed to the CSI
  // driver. Consult your driver's documentation for supported values.
  // +optional
  map<string, string> volumeAttributes = 4;

- Fixed bug with leads to Node goes `Not-ready` state when credentials for vCenter stored in a secret and Zones feature is in use. Zone labels setup moved to KCM component, kubelet skips this step during startup in such case. If credentials stored in cloud-provider config file as plaintext current behaviour does not change and no action required. For proper functioning `kube-system:vsphere-legacy-cloud-provider`...

- Return error when the scoring plugin returns score out of range `[0, 100]`. ([#81015](https://github.com/kubernetes/kubernetes/pull/81015), [@draveness](https://github.com/draveness))
- Use a named array instead of a score array in normalizing-score phase. ([#80901](https://github.com/kubernetes/kubernetes/pull/80901), [@draveness](https://github.com/draveness))

- [`KTIJ-24666`](https://youtrack.jetbrains.com/issue/KTIJ-24666) Store annotation arguments in cls
- [`KTIJ-24667`](https://youtrack.jetbrains.com/issue/KTIJ-24667) Store constant expressions in cls
- [`KTIJ-24665`](https://youtrack.jetbrains.com/issue/KTIJ-24665) Store contracts in cls

API fields previously capable of storing and returning either `[]` and `null` via JSON API requests (for example, the Endpoints `subsets` field)
can now store only `null` when created using the protobuf content-type or stored in etcd using protobuf serialization (the default in 1.6).

### Promoted CRD Validation Expression Language to Beta