In an odd move, Rolls-Royce has released its least illustrative teaser image yet of the upcoming Wraith as the final to be shown before the car's official debut at the 2013 Geneva Motor Show.

While we're not sure why the sketched profile of the top half of the car would be of any additive value to the photographic profile of the same, we're glad Rolls-Royce has decided to give the Wraith's form a name: the fastback.

Fastbacks are a familiar form, and while essentially a spin on the coupe body style, the name helps guide the onlooking world toward Rolls-Royce's idea for the car as much as toward its final appearance.

By calling the Wraith a fastback, the company is clearly putting an emphasis on the car's performance nature--though still undeniably bringing a velvet-gloved fist down on the luxury front as well.

What we suspect of the Wraith so far also leans in the sport-oriented direction, too, as befits a car with the Bentley Continental GT, and its Speed derivatives, as its most likely competition. Power for the Wraith could come from a twin-turbocharged 6.6-liter V-12 shared with the Ghost sedan, but tuned to more than 600 horsepower--right on the GT Speed's heels.

Whether the Wraith will be able to hang with the proven, albeit decade-old, Bentley remains to be seen on the road--but we'll have our first full look at the car, and its specs, in just a couple of weeks with our live coverage from the 2013 Geneva Motor Show.