This isn't the new GTO, but it is a wicked car none the less. It is a new coupe based on the basic monaro platform. It has two sets of twin pipes, two hood vents, a carbon fibre bonnet and a C5R, 7.0 litre, 427 cubic inch engine. It's the HRT 427 coupe.(HRT-Holden Racing Team)
Basically it's 100kg's (200+lbs) lighter than a standard Monaro but with a bigger engine.
Check it out at http://www.hsv.com.au/vy/showcars/showcar.asp