After enduring a year of spy photos, factory teaser photos and at least one "viral" Internet video, Porsche has given us some clean looks at the exterior of the new Panamera sedan and some technical details--four months before the car makes its debut at the next Geneva motor show.

What we see is not much different from the most recent spy shots--a sedan with a long hood and short rear overhang, a rear hatch instead of a traditional sedan trunk lid with styling that evokes the back end of the iconic 911, air intakes in the front fascia and the lack of a formal grille, and four high-back bucket seats, although Porsche did not release any photos of the Panamera interior.

The backrests of the rear seats will fold, Porsche said, to create more cargo room.

The German automaker did give up some specifications:

-- Overall length: 195.7 inches

-- Width: 76 inches

-- Height: 55.8 inches

Under the hood, the Panamera will be powered by V6 and V8 engines, Porsche said, with output ranging from 300 hp to 500 hp. Some of the engines will use turbochargers and direct-injection fuel delivery.

All-wheel drive will be standard on the top-end Panamera, and available as an option to replace rear-drive on lower-trim-level models. Panamera owners will have the choice of a six-speed manual or the seven-speed PDK dual-clutch transmission.

Porsche will assemble the Panamera at its Leipzig, Germany, plant using body shells built and painted at a Volkswagen plant in Hanover and engines from Porsche's plant in Zuffenhausen. Porsche said it has a sales target of 20,000 Panameras a year.