Enter the Rumormill: Audi R8 getting twin-turbo V10 from RS6

Word around town is that the same engine that powers the 580-hp 5.2L twin-turbo V10 in the recently announced Audi RS6 Avant could also find its way to the back hatch of the Audi R8. We first reported on the possibility of a twin-turbo V10 back in February, and it seems the stat sheet on the RS6 has merely stoked the flames.
With 580 (or more) ponies in tow, the R8 should beat most anything on the road, including its current competition like the Porsche 911 that offers more powerful models in its lineup. Throw in bigger brakes and wheels with a modified suspension, and even the vaunted GT2 should begin to worry.

Source: http://news.euro-truck.biz/autoblog/enter-the-rumormill-audi-r8-getting-twin-turbo-v10-from-rs6-2/