Saab will show a third model jointly developed with Subaru at the New York auto show next March.
The 9-8X will be a seven-seat crossover utility vehicle developed for the US market.
Saab has not decided whether the vehicle will be sold in Europe.
Saab already has two projects with Subaru, a fellow General Motors affiliate. But the 9-8X is its first joint venture with Subaru that's based on a new platform.
The Subaru version, called the B9X, will debut in January at the 2005 Detroit auto show. Saab and Fuji Heavy Industries Ltd., which owns Subaru, say the two vehicles are being designed separately.
"Because we were involved at a very early development stage, it will feature a very unique Saab body style," said a high-ranking source at Saab in Trollhättan, Sweden. "And it will be a real driver's vehicle."
Saab's former chief designer, Michael Mauer, designed the 9-8X before he left Saab for a similar post at Porsche earlier this year.
"What we will show in New York will be a concept study," the Saab source said. "The production version comes later."
The all-wheel-drive 9-8X is expected to go on sale in 2006 in the US.
Subaru's B9X will be introduced in the US next summer as a 2006 model.
Both vehicles will be made at Subaru's plant in Lafayette, Indiana, USA.
Saab's other projects with Subaru are the Impreza-based 9-2X crossover wagon, built by Fuji Heavy in Japan, and the 9-7X SUV based on the Chevrolet TrailBlazer. The 9-7X will be built at GM's plant in Moraine, Ohio, USA.