Well, i believe they will get close to that, why? Some moths ago, IBM posted an article, on a new technology able to produce chips @ 0.3microns and 0.1 was already being consired also, theses news about a 150Ghz arent new 2 me, in that article i read, IBM mentioned they expected to reach 200ghz, plus something about being able of building the chip with integrated cooling system, i don´t know for sure, it envolved somethng about nanotubes.
Go ahead be scheptical ,do a reacherche yourselfs.