Bentley releases the official pictures and details of the new Continental GT Speed Convertible – the fastest four-seat convertible in the world – ahead of of its official debut at the 2013 Detroit Motor Show. It has 625 horsepower, and a top speed of 202 mph (325 km/h).

Apart from the soft-top, the GT Speed Convertible is pretty much identical to the coupe version of Bentley Continental GT Speed. It has the same twin-turbocharged, 48-valve, W12 engine developing 625 PS (616 bhp) and 800 Nm (590 lb.ft), which takes it to 60 mph from nought in 4.1 seconds (0-100 km/h in 4.4 s.) and onto a top speed of 202 mph (325 km/h).

Compared to the standard GT Convertible, the Speed sits 10mm lower, has an optimized Electronic Stability Control (ESC) system, features sportier suspension system with double-wishbone front suspension and trapezoidal multi-link rear setup, and features different 21-inch wheels.

Visually, the Speed comes with a matrix radiator grille and bumper air intakes in a dark-tint chrome finish, and elliptical exhaust tailpipes. Inside the cabin it is business as usual, which means you get an exquisite blend of finest materials and the best craftsmanship known to man.

The Speed Convertible also comes with a new neck warmer system that makes it possible to have the top down even in winter.

Pricing for this models is yet to be announced, but it is certainly much higher than the standard Continental Convertible. It is up to you to decided whether the added performance and sporty touches are worth the extra pay.