Audi’s iconic R8 sports car was introduced in 2006, followed by a facelift in 2012. Now, March 2014, Audi has begin testing the second generation R8.The new R8 was spotted undergoing testing at Germany’s Nurburgring race track. Spy images reveal its new angular styling and design changes. The interior will borrow heavily from the new TT concept.IMAGE GALLERY: 2014 Audi R8 (Spy)The new R8 has a mid-engine platform, one also used in the Lamborghini Huracan though it has not been confirmed what will power the next R8. Rumour has it that it will use a version of the RS7's twin-turbo V8 and a non-turbo V10 A plug-in hybrid will be available. Engines should be mated to the automaker’s S-tronic seven-speed dual-clutch auto gearbox though a six-speed manual is in the works.The new Audi R8 is set to be launched in 2015.MORE FROM AUDIEarlier in 2014, Wheels24 reported that Audi’s first S-badged Q5, the SQ5, and third-generation S3 Sportback arrived in SA. In February 2014, Audi launched its first RS-badged SUV in its “Q” line-up, the RSQ3, and the supercar-hunting RS7 Sportback. Audi SA will boost its local range even further in 2014 with the introduction of its smallest S-badged hatchback yet, the 170kW S1.Audi said it’s considering its RS6 Avant for introduction in 2015 due to “the popular demand of this model” while the second quarter of 2014 will see the launch of the 200kW Audi TTS Special Edition, new S8 and S3 Cabriolet.