User blog comment:MisterWoodhouse/Updates to Discussions and the plan for Forums/@comment-46136545-20200812192555/@comment-24006128-20200812192709

It depends on the wiki. If you have a banner saying that you're migrating to the new platform, it will happen in the next week or so.

If you don't have a banner, you have longer than that.

All of the wikis should be migrated this year.