Difference between '04 GT2 and previous

I just found out that Porsche is adding more ponies to the already awesome GT2. I believe that for 2004 it will have 477hp compared to 456hp. But the claims of 0-60, and top speed that I have been reading from magazines such as EVO and Top Gear seem to be the same as the ones from the previous GT2 ('02 and '03). If I'm not mistaken the '02 '03 models were capable of 196 mph, and 0-60 in less than 4 seconds. Now claims state that the '04 even with more Hp has the same top speed of 196 and 0-60 of 4 seconds. So what is the biggest difference between the '04 and '02, '03 models? Is the new one heavier?

No, the '04 is supposed to be 7lbs lighter. It also has revised springs and dampers and lighter wheels.

Greg A