Nissan has released a sketch of the Forum, a concept vehicle the firm will unveil at the Detroit Auto Show in January. Created at Nissan Design America, the Forum concept offers innovations such as trackless sliding doors and no B-pillars. It is said to 'explore the next generation of family transportation'. 
While we're not exactly sure what that entails, it's probably safe to assume that the concept will feature some of the styling cues seen on the company's concept cars unveiled in Tokyo. We'll keep you updated in our Detroit Auto Show Highlights once we've seen it in the metal.
UPDATE: December 5 2007
An interior sketch, depicting the flowing instrument panel of the new Forum concept, has just been released by Nissan. The minivan's cabin, Nissan claims, will host an array of communications systems including an advanced Bose Media System with proximity sensor-based information controller and a one-button audio muting system. The technology laden interior will also feature monitoring cameras for the second and third rows, while individual seat-mounted speakers will be integrated into every row.