Audi hasn't even released official details on the A7 Sportback->ke1687 and already recent spy shots reveal that the company is also preparing a four-door coupe model that will be unveiled in September at the Paris Auto Show.

The top version, RS7 Sportback is based off of the 2011 Audi A7->ke1687 and will be powered by Audi’s naturally aspirated 5.2-liter V10 engine in combination with the firm’s new seven-speed dual-clutch gearbox. Total output will be an impressive 580 HP.

Other models in the line-up will use a range of V6, V8 and V10 petrol and diesel engines.

The 2012 A7 was previewed by the Sportback concept shown at last year’s Detroit show and is said to share a similar look with the A8->ke1089, but oriented more into luxury than functionality.

“The overall look is less formal than that of the A8,” says Audi design boss Stefan Sielaff.

Sales will begin in March 2011.

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