Publish a blog post that describes what we have renamed, why we did it, and how interested people can get involved in using our products.
This can draw from the internal renaming discussion points, the various internal pitch decks, labs-l posts, wikitech discussions, etc.
The main goal is to make it obvious that the Wikimedia Foundation runs a public cloud that provides resources to volunteers who are working on technical projects related to the broader Wikimedia mission. This is a big deal, but not everyone knows that this has been the mission for "Labs" for the past 6 years.
Actual publication should wait for the main rebranding efforts to be completed (irc, phabricator, wikitech), but drafting could start at any time.