User blog comment:MisterWoodhouse/Updates to Discussions and the plan for Forums/@comment-36145153-20200806193449/@comment-31121388-20200806193739

They're not beginning yet.

"As the blog says, there will be a banner before migration. We'll begin the process for the first wave of migrations in the next week or so."

This is what MrWoodhouse just said to another reply. So they're not happening yet, but soon.