I have to apologize for the poor quality of these pics.
We can't really see anything new, but I thought I'd post them anyway...

The new double sunroof/glass roof option is very visible on these shots. And the side of the car doesn't seem covered, besides the funny tape.
In the front, they've put the tape in such a way that it creates wrong shapes around the lights.

The engine will of course be the new 3.5 Liter V6. And I have a January 2006 date from Japanese sources. So it might be at Detroit after all...