The phrase "roadster version" refers to a type of car that is designed for pleasure driving. It typically has two seats, a convertible top, and a sporty style. Full definition
To bring you up to date, the GT family now consists of the AMG GT, the GT S, the GT C and the GT R, with Roadster versions of the GT and GT C. Whew. (Autoweek.com)
German carmaker Audi has unveiled the RS version of its popular sports car, the TT, in both Coupe and Roadster versions in April 2016. (cardekho.com)
Dark chrome colour 19 - inch aluminium wheel standard in Coupe Version ST and Version S, optional in Roadster Version ST (en.wikipedia.org)