I know the 7 Series is no sports car but a lot of sports car owners also own a BMW 7 series as a daily driver, so I thought I'd mention it.
Not much changed on the engine front, there are some enhancements but the most powerful engine, the V12, is still at the same power level. There have been rumours of a 500+ HP 7 Series but it seems: no such thing.

Check for yourself: (the picture showing two cars shows the newer one on the upper picture).
The facelifted 7 Series should be available starting April 2005.