* as being in state "Unknown", along with a longer description in `kubectl describe` output.
* The hostname of the node (as autodetected by the kubelet, specified via --hostname-override, or determined by the cloudprovider) is now recorded as an address of type "Hostname" in the status of the Node API object. The hostname is expected to be resolveable from the apiserver. ([#25532](https://github.com/kubernetes/kubernetes/pull/25532), [@mkulke](https://github.com/mkulke))