I'm building a system with a C2D E6600, and I'd like to keep it upgradable. In particular, as quad-cores become more mainstream and software really begins to take full advantage of them (maybe in 1-2 years time), is it likely that I will be able to get one without having to replace my motherboard? I know right now an Asus P5W-DH Deluxe supports Kentsfield processors, but how long will it remain that way? Is there something on the near horizon that could prevent me from upgrading? Like a new socket... I don't know.