Did they even show an X last year at the NAIAS?? I don't think so, IIRC it was just 3 MS. So, either this is a beta, or they are going to drag out a 2+ year old prototype, which would not be a wise move. I vote that this is a beta, or else it is not going to the NAIAS. Sadly, after magnifying every aspect of these photos, I cannot see any significant differences from the white prototype.
No. There was an X in Detroit in '13, but not in '14.