Fisker has developed an extended-range electric vehicle called the Karma, which is expected to go into production by the end of 2009. It is a four-door sports car priced at $87,000.

Now the automaker is teasing us with its plan to unveil a new concept on January 12th 2009 called the Fisker Sunset.

Fisker has issued the following limited statement about it:

In addition to the production version of the Karma, the first luxury plug-in hybrid, Fisker Automotive will also be taking the wraps off a new concept during the North American International Auto Show in Detroit.

The Fisker Karma S will be powered by the Karma’s Q-DRIVE® powertrain, developed in cooperation with Quantum Technologies exclusively for Fisker Automotive. Q-DRIVE® offers a 50 mile range on a single charge to its Lithium-Ion battery pack, and up to 408hp from two electric motors.

Fisker Automotive CEO Henrik Fisker will announce details about the Karma S at the company’s press conference on January 12, 2009.

By the absence of a B-pillar in the teaser photo it suggests that this may very well be a convertible version. We'll have to wait and see.