Later today, I am upgrading our OpenStack deployment from version Zed to Antelope. [1]
Expect Cloud VPS to be partially unstable: horizon.wikimedia.org will show a maintenance message and API calls might fail.
You can follow the upgrade details at https://phabricator.wikimedia.org/T348843 and on IRC (#wikimedia-cloud-admin).
[1] https://releases.openstack.org/antelope/