http://www.autoweek.com/article.cms?articleId=101318

At its heart is a rework of the outgoing model’s 3.6-liter flat six, with larger turbochargers, more efficient intercoolers and revised electronics. Power could climb by 40 hp to 460 hp, with torque increasing to about 460 lb-ft, enough to propel the new car to 60 mph in four seconds flat, according to Zuffenhausen sources, a 0.2-second gain. Despite a marginally increased frontal area, improved underbody aerodynamics and a more efficient bi-plane rear wing should make the car go faster than the 191 mph of today’s c
Porsche’s 997- based 911 Turbo is due in early ’06.
A new awd system incorporating electronic differentials allows power to be apportioned independently to the wheel with the most grip. In normal conditions 62 percent of the drive torque is sent to the rear wheels. The six-speed manual gearbox will provide a shorter action. PASM (Porsche active suspension management) with continuously varying damping is also available, as is a double-clutch gearbox. And with 19-inch wheels and tires, there is room for big ceramic brakes.
Setting the new 911 Turbo apart from lesser 911s is a series of traditional styling cues, including uniquely styled cooling ducts, wider wheel arches, tailpipes set within the rear valance panel and its signature “whale-tail” spoiler mounted over the engine lid.
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This looks quite a bit wider than the 997 { which is already pretty wide }

 

Donna this is a very old report. Latest news is that the 997TT will have a 3.8 litre engine which will produce 480hp, and the earliest it will arrive in showrooms will be some time end of 2006 if not early 2007.