Hexus is talking about some hidden features in Intel's Yonah (Core Duo) that will be "revealed" when they start shipping some ultra-low wattage Xeons sometime soon...

"And it transpires that Sossaman supports iAMD64, er, sorry, 'EM64T', symmetric multi-processing with another Sossaman Xeon, and hardware virtualisation. Intel's implementation of the 64-bit extension to x86, SMP and hardware VT are all missing from the official specs of Intel Core Duo consumer processors, despite Yonah and Sossaman being the same thing. "