There have been rumors about a 998 right around the corner in 2008, I never believed it until I saw how the 997 was not really a new model, like (964->993->996 etc) but rather a modded 996. On the otherhand, if there is going to be a 997TT released maybe one years later after the 996C2, it doesn't make sense to introduce the 998 just 2 years after. However, I don't think we will ever know wether its true or not since Porsche would never allow us to know either so as not to hurt 997 sales. So we will have to wait and see until they want us to know.