Mercedes AMG is now also developing a Sports Car for 2010, since BMW already announced to make one, to compete with Audi R8, and by now the lonly german pure sports car producers, Porsche.

Well porsche had to many years their own market place, seems that everybody want to have a part of this big sweet cake.
IMO those cars will just be another heavy AMGs or Ms with the sportcar look, but the most positive thing will be for us, that Porsche will (be forced) change their as much profit as possible strategy completley.
So I think, the 998 model will suprise all of us.