This is still happening. Though we've been quiet here on this thread, things have not been quiet at Stack Exchange. We've gotten a lot of the back end prep work finished, written a bunch of guidance to help ease the transition, and are about to start testing the process to make sure we don't break anything too horribly or lose any precious unicorns when we do the move for real.

I still don't have an official launch date for MSE yet, but we are, in fact, progressing. We didn't feel that there was anything to report here since we couldn't announce an actual date, but it appears that some update was desired, so there you have it.

Six to eight weeks more, I'd say, and then we'll move into our new house.