The latest variant to be caught in the public eye has been a deceptively camouflaged prototype of the E-Class Cabriolet, so far called the CLK.
While features such as the headlights and tail lamps have been covered over, their design is no real mystery, having already been unveiled on the sedan variant at the Detroit Auto Show.
Although the most crucial feature is the seemingly soft-top convertible roof, which is actually a clever way of hiding the retractable hard-top design.
Clearly visible in these images is the joint between the windshield and front edge of the roof, along with the wider disguise of the c-post and matching wider boot deck lid.
Still officially baring the CLK namesake, the new E-Class coupe and cabriolet are based on the C-Class sedan to meet the more ambitious driving demands of prospective buyers.
The engine line-up will also come from the current C-Class range, including a flagship V8 unit for an E 500.
The new E-Class Coupe and Cabriolet are expected to arrive in showrooms overseas by mid to late 2009.