The Mercedes Concept S-class Coupe will make its worldwide debut at the Frankfurt motor show next week. The news was announced, accompanied by a sketch, on Mercedes' Facebook page this afternoon.

The car, which had previously only been seen disguised while testing testing, will form part of a five-strong line-up for the new S-class and rival the Bentley Continental GT.

Mercedes is aiming for a sleeker, more muscular appearance for the S-class Coupé, eschewing the two-door saloon style of the CL it replaces.

Latest spy shots show the S-class with a narrow glasshouse and a dramatic swage line that runs from the front wing to the rear wheelarch.

The rear of the S-class Coupé features LED lights and a unique design that appears unrelated to any other Mercedes models, including the new S-class saloon.

A gentle sloping of the rear windscreen implies rear seat accommodation will remain a priority for the two-door car. Prominent exhaust pipes also hint at the more sporting intent of the coupé.

Further additions to the line-up will include a convertible based on the Ocean Drive concept and an extra-long-wheelbase version under the 'Pullman' name.

Mercedes-Benz's new coupé is expected to arrive in 2015, following a debut at next year's Geneva motor show.

Thanks to: Autocar