Re: OK… How painful is the transition from MU to WP 3.0 going to be?
My understanding is that the technical details of the merge are only just now beginning to be discussed. See the links here: http://wpmututorials.com/news/merge-news/, including the merge trac ticket, which was only opened 10 days ago. That ticket would be a good thing to monitor as the merge approaches.
As far as the BuddyPress end of things is concerned, I’m assuming that Andy’s recent work on non-MU compatibility is a step in the direction of ensuring that the move to 3.0 doesn’t break BP. But I have a sense that the details of how the merge will affect existing sites, and in particular those running BP, will not emerge until some of the technical details of the merge start to get decided.