Somewhere i read that 2012 will come the next generation of the 911 and it will be a totally new built(like 3.2-->964 or 993-->996). But i really doubt that there will be an engine change at all...There will be a flat boxer engine for sure IMO. On the other side i just see potential anymore in the 911 if they use more lightweight in future, otherwise their caymans will outrun the 911's. But as it looks now it seems they really want the 911 to be more of a gt car than a really die hard sportscar as it was, back i don't know when..., so probably the cayman will be their die hard sportscar in the near future let's see