Spotted as it was dropped off at Germany's Nürburgring test track, this prototype doesn't appear to have changed from the auto show concept shown last year.
Huge quad exhaust pipes hint at something serious under the hood. Most speculation suggests a 3.8-liter twin-turbo V6 with as much as 450 horsepower.
Bulging front fender flares recall previous Skylines while the unique window line gives it an instantly recognizable profile.
Central air intake is another Skyline trademark. Additional side intakes are also visible underneath the camouflage.
The GT-R Proto concept that debuted in Tokyo last year gave a pretty good hint at the eventual production car.