More design sketches of the new Mercedes Concept S-class Coupé have leaked online, ahead of the car's debut at the Frankfurt motor show next week.
So far Mercedes-Benz has only confirmed that one, originally released on its Facebook page, is official.
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 for the production car at next year's Geneva motor show.