<< Could it be that Thermalright is anticipating a small footprint on upcoming CPU?s? >>
Uhm, probably not. Why bother making a huge base when an Athlon core is the size of a dime, and a P4 is pretty tiny too? The only reason the base has to remain long is because it has to be to compress all the fins together.
But there's really no sense in caring until it comes into production. Heatsinks don't need to become like video cards and processors, where people are afraid to buy now in case something better comes out tomorrow.