Porsche AG says its new Panamera 4-door 4-seater will break cover in the spring and hit U.S. dealers next fall, and a hybrid model ultimately will be part of the mix.

The first official photos of the car in Gran Turismo dress were released today, however, showing the Panamera to have what Porsche calls “an unmistakable GT silhouette” despite its 4-passenger configuration.

Interior photos were not released, but Porsche says the car provides “a cockpit-like atmosphere from all four seats.”

“In styling and details, the Panamera follows the design philosophy refined over decades on the 911 and successfully implemented on the Boxster, Cayman and Cayenne,” the auto maker says.

The 4-door coupe measures 195.7 ins. (497.0 cm) in overall length and is 76 ins. (193.0 cm) wide and 55.8 ins. (141.7 cm) tall.

It will offer both V-6 and V-8 engines, ranging in output from 300 hp to 500 hp. Some of the powerplants will be direct injected and turbocharged.

Transmission for the rear-drive model will include a 6-speed manual and a 7-speed dual-clutch gearbox.

Porsche says it also “is preparing a fuel-efficient version of the Panamera with hybrid drive,” but doesn’t disclose any further powertrain details or timing.

Annual sales are targeted at 20,000 units. The Panamera will be built at Porsche’s Leipzig, Germany, plant, which is in the process of adding a 237,000-sq.-ft. (22,017-sq.-m) production hall and logistics center to handle the new model.

Engines will come from Porsche’s Zuffenhausen, Germany, plant, and painted bodies will arrive at Leipzig from Volkswagen AG’s Hanover, Germany, facility.

Porsche says the Panamera will have about 70% German content.