► Spied: Mercedes-AMG GT Black Series
► 4.0-litre V8 tuned to 585bhp, 553lb ft
► New spyshots of the faster GT
Mercedes-Benz isn't resting on its laurels. The AMG GT sports car has only just launched - to much acclaim around these parts - but it's already developing its faster, angrier sibling: the new Black Series edition, expected to be shown later in 2015.
Our spies have caught the AMG GT Black Series on test at the Nordschleife in Germany, revealing its fixed rear wing and other aero addenda - see those front winglets behind the front wheel? - being tested in real-world conditions.
If, that is, you consider the Nurburgring to be a typical driving environment...
What do we know about the GT Black?
This car follows the well established path of the go-faster brigade in Affalterbach: more power, less weight and some pretty serious revisions to warrant a price tag expected to exceed £125,000.
For comparison, a regular 462hp GT costs £97,000; the uprated 510hp GT S £110,000.
AMG is reputedly tuning the Black Series' 4.0-litre twin-turbo V8 up to around 585bhp, according to CAR's sources, along with a torque increase to 553lb ft.
How fast will the AMG GT Black Series be?
Predictably ballistic. Remember the GTS is capable of 0-62mph in 3.8sec and a 193mph top speed, so the fettled Black can only dive deeper into supercar territory.
However, this car will be as much about sharpened responses as sheer straight-line speed. Hence the revised suspension and steering systems, the giant rear wing and uprated carbon ceramic brakes. We hear it is likely to feature even lighter race-spec alloys, too.
A pretty serious bit of kit, we'd say. Sounds like the GT3 racer programme will have some spill-over into the ultimate roadgoing version. And if the Black's not enough for you, we're hearing early whispers of an even harder 600bhp iteration loosely dubbed the AMG GT-R - although Nissan might have a word or two to say about that badge...