We will write a formal news post about it in the next day or two. At this moment, the announced migration is still questionable for this offseason, and we didn't want to announce it before we are at least somewhat certain that it will happen (and therefore will require server downtime).
The preparations are still being made and so far, it's looking good, but, as I said, there's still uncertainty and a lot of unknowns as we still don't have the cloud replacement server up and running.
All that being said, your questions and concerns are valid. We will consider pushing the whole BB schedule back a week if the downtime turns out to be taking longer than a day or two. Transfers will, of course, be delayed before the downtime.