Here is a hi-res blow-up of what I think is the planned design..
http://www.triroc.com/wtc/pix.ninefo....ninefoot.jpeg
I really dislike it. It eliminates the -IMO- one redeeming stylistic element of the old towers: the clean verticle lines from near-ground level to the top. Instead, this seems a basic, boxy, rows of windows design you see in dozens of buildings every day. I think the impression you get is two very dull, but very big, buildings.