These are the first official photos released by Mercedes-Benz of the upcoming 2012 SLS AMG Roadster.

But the model seen here appears to still be a test-phase prototype with camouflage taped over its head- and taillights and the logos still covered up.

The SLS AMG Roadster gets a soft-top roof made of cloth that can be retracted or closed in 11 seconds at speeds of up to 50 km/h (31 mph).

For obvious reasons, it loses the gullwing doors but only adds 2 kg (4.4 lbs) to the weight of the bodyshell, compared with the standard SLS AMG, for the added structural reinforcements needed for a roadster.

The two variants do share the same 6.3 liter (6,208cc) V8 with an output of 420 kW (571 PS / 563 bhp) and 650 Nm (479 lb-ft) of torque. The 0-100 km/h sprint comes in at a flat 4.0 seconds and top speed will be 309 km/h (192 mph).

The 2012 Mercedes-Benz SLS AMG Roadster will debut at the Frankfurt motor show in September and goes on sale later in the fall.

Check out the press release below for further details.

Gallery: Mercedes SLS Roadster officially revealed - mostly

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