have a looked at the photo on this page, on the right side about half way down. The guy is holding a new Powerbook, it's not the 12 inch, and looks too small for the 17inch. ...
could this be a new 15inch powerbook photo?
I think that he is typing on a 17". Because it is shot at an angle, the apparent size difference could be do to a parallax error.
As far as the track pad, it is likely that Apple will use the same track pad in all its new models if it can. It saves money and reduces the number of different kinds of parts that Apple has to manage.
