They were quite emphatic that this was a PRE production unit, and that alot was still up in the air. The '05 X is still a ways off.

I still want one

As for the rear locker, this (combined with the smirk and a "there is still more to come" from the Nissan guys) is heartening:

From this page under Drive Configuration Available advanced off-road traction capabilities.

Talk about vauge but in a potentially good way

EDIT: Oh, to address another concern, the stadium seating is still there. I think the bump in the roof is reduced because the front of the truck got raised - they cited all around headroom improvements, and said that the back seats have gained 3" of space - that's quite a bit! Also, the new roof rack is much more integrated than before and that could be contributing to a bit of an optical illusion.