Somewhere in northern Sweden our spies caught on camera a camouflaged prototype of the upcoming Mercedes-AMG GT R (name not confirmed).

Somewhere in northern Sweden our spies caught on camera a camouflaged prototype of the upcoming Mercedes-AMG GT R (name not confirmed).

It’s been a long time in the making, but the meaner GT is only a few months away from going official as Mercedes-AMG CEO Tobias Moers revealed recently it will be introduced in the summer. Seen here are spy shots of a prototype hiding several changes underneath the body camouflage. The most obvious novelty is the addition of a wing meant to boost downforce at the rear axle.

It also has a more aggressive rear diffuser and a big oval exhaust pipe mounted in the center which could be replaced by a dual arrangement on the production model. We are not entirely sure, but the rear bumper seems to host two vertical air vents located between the taillights.

Moving on to the car’s front, the prototype has a beefier bumper with larger air vents and what appears to be a wider grille. Mercedes-AMG has already announced the hardcore GT will make use of active aerodynamics and will likely shave some weight as well to further boost performance. It looks wider than the regular version and will feature many bits and pieces derived from the track-only AMG GT3.

As for the engine, the upgraded biturbo 4.0-liter V8 engine will likely be taken to somewhere in the region of 550 horsepower. For the sake of comparison, the current AMG GT S has 503 hp which grants the model with a sprint to 60 miles per hour (96 kilometers per hour) in 3.7 seconds.

All these improvements won’t be enough to justify the “Black Series” moniker as Mercedes has already said it won’t be called that way. It’s also not going to be named “GT3” since Porsche would have a problem with that. The latest gossip points towards the “GT R” suffix, but we’re not entirely sure it will be called this way because it would clash with Nissan’s supercar.

A fully-fledged Black Series model will certainly happen at some point during the model’s life cycle, but we will probably have to wait at least until the second half of 2017.

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