Confirmed: New Audi R8 Will Get a Turbo As Its Second Engine - Car and Driver (blog)

The new, second-generation Audi R8 is launching with a 5. 2-liter naturally aspirated V-10 as its sole engine offering, the previous entry-level 4. 2-liter V-8 having been jettisoned from the lineup. Source: blog.caranddriver.com