Porsche unveiled the Panamera for the first time to the public at the Shanghai Auto Show. The car will be available with either a 400-hp naturally-aspirated V-8 or an optional 500-hp twin-turbocharged V-8 when it goes on sale on October 17, 2009; a V-6 and hybrid model should show up a year or two down the road. The naturally-aspirated engine will be available with either rear-wheel or all-wheel drive. The forced-induction Panamera Turbo will come standard with all-wheel drive. A 7-speed Porsche PDK transmission will be stock on all models.

Also at the Shanghai Auto Show, Jaguar introduced more details on the upcoming redesigned XJ. Like the previous generation, the new XJ will utilize an aluminum frame to save weight and increase both fuel mileage and performance. Available engines will include the new 510-hp 5.0-liter supercharged V-8. Unlike previous redesigns, which have stayed unreasonably close to their predecessors since 1968, the new XJ looks like it will take a dramatic step in a new styling direction; at least that is what the one photo Jaguar released leads us to believe.

Rolls-Royce was also in attendance, revealing the production name of “Ghost” for its baby 200EX concept. In the same spirit as the Phantom, which comes in a variety of body configurations, the Ghost will make its debut with four doors, but may lose two doors, its top, or both in the future.

“This car will be the first in a new generation of models to carry this evocative name and will give us two pinnacle product lines - Phantom and Ghost.” Said Rolls-Royce CEO Tom Purves.

The Lamborghini display took the wraps off the Murcielago LP670-4 SV for the first time live.

[via Jalopnik and eGMCarTech]