According to the very helpful person on the 800 number (which I found here), my X5 is scheduled for week 15 production. I think that puts it in the week of April 9 unless my calendar is broken. Of course there are all kinds of possibilities for delay, at every step along the way. I've requested delivery in SC, so at some point my CA needs to get back to me with possible dates so I can arrange my schedule.

I'll post updates when there's progress.