Hello!
Tomorrow (Sunday May 24th) at the Lyon Hackathon we will have a conversion and documentation sprint on extension registration at 17:00 in the Fourvière room.
https://tools.wmflabs.org/extreg-wos/ has a list of extensions that have been converted and which still need to be converted! Stop by if you want to work on converting an extension, learn about the new system, and find out what's next! I'll also be working on improving the documentation for sysamdins and developers at that time.
Phab task: https://phabricator.wikimedia.org/T90022
-- Legoktm