It is the cover story in the newest edition of Winding Road.
You can download the latest version here.
R8 Introduction PDF (requires filling out form)
There isn't all that much information:
Overall concept: From Audi, the creator of quattro,® comes the all-new R8. High-revving 4.2 liter V8 with FSI® Direct Injection technology. Sport-biased quattro all-wheel drive with 44% front, 56% rear torque distribution for outstanding traction and driving dynamics.
Horsepower: 420 hp @ 7800 rpm
Maximum torque: 317 lb-ft @ 4500-6000 rpm
0 to 62 mph (0 to 100 km/h): 4.6 seconds
Top speed: 187 mph (301 km/h)
Wallpaper from Audi (once on the media page 1. click the views 2. select the image 3. select the size and the pic you want will popup in another window).