Noble has confirmed they are still considering an M600 Roadster.
In an effort to get feedback from prospective customers, the company released several rendering on Twitter. While the pictures are a little amateurish, Noble said the car would likely feature a targa-style roof that could be removed and stored in the engine bay. The company also said the M600's "handling and rigidity would not be effected" by eschewing the hardtop.
If the model is approved for production, it would likely feature a twin-turbo 4.4-liter V8 engine that produces 650 bhp (485 kW) and 604 lb-ft (818 Nm) of torque. This allows the coupe to accelerate from 0-60 mph in 3.0 seconds and hit an estimated top speed of 225 mph (362 km/h).