Audi has decided to built a new version of the A8 to move in a new niche. The sportback ( Spotbacks are less wagon like than Avants are more like a coupé) has the same engines as the A8 and some new ones (wich will come to the normal A8, too). release is 2006.
engines:
S8 5,2 V10 420 Hp
RS8 W12 550 Hp (not completly decided)