User blog comment:MisterWoodhouse/The first migrations to the Unified Community Platform/@comment-43745277-20201213195315/@comment-24258073-20201214023155

By the looks of things, it seems that all the wikis except Community Central and a few other wikis will be migrated in less than 24 hours as of writing this. So pretty much all the regular wikis will be migrated when that time comes.