Quite the strange communication. It was posted on the forum in May, and may have landed in developer notes afterwards, but the general mail to users went out less than 1 month before deadline. And now quite a few customers are mad.
It's also not the best business case. We've been tolerating infra-code in Bitbucket, because it would be a pain to migrate.
Now someone snidely remarked: Once we have done this migration in a hurry, don't we know all the places we have to touch to move out of Bitbucket - in order to avoid such short-term activity? It's difficult to answer no to that.