A mysterious Porsche 911 Cabriolet prototype was spied in Germany near the Nürburgring and according to our sources it was the upcoming GTS version.

A mysterious Porsche 911 Cabriolet prototype was spied in Germany near the Nürburgring and according to our sources it was the upcoming GTS version.

It's getting harder and harder to keep up with the continuous growth of the 911 lineup and we should prepare for another nameplate set to enter the range, the GTS, which based on reports will be slotted between the S and Turbo as far as the engine's power is concerned.

Previous spy photos have revealed a similar possible GTS for the fixed roof version and both of them are likely to receive a detuned 3.8-liter 6-cylinder boxer naturally-aspirated engine. To get an idea about the expected output, we should remind you the S has 400 PS (294 kW) while the Turbo pumps out 520 PS (383 kW) so there's plenty of room between the two for a GTS.

These GTS 911s should be unveiled in the months to come before going on sale late 2014 / early 2015 together with a mild facelift for the entire 911 range.

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