Thanks for the feedback guys, the schedule for the 2015 x1 does seem to line up pretty well with last years.
Another strong indicator is the minor update which is scheduled for "Spring" (
http://e84.xbimmers.com/forums/showthread.php?t=923577). If production starts in March, then cars would be to customers mid-to-end May? That fits right in the Spring timeline (March 20th - June 21st). Though I haven't read any direct source stating the minor update starts with the 2015 model year production.
Anyway, my only source is my local BMW dealer, who I assume got the info from BMW since he was quite specific--but we all know dealers are also the source of tons of BS. We'll know for sure soon enough, first week of February isn't too far away.