Apparently, not all of the new consoles have the chip, but Kotaku claim that if the barcode on the box has the words August 24, 2007 from team "FDOU" and part of lot 734, then your console will have the new chip.
Hopefully, this should mean that you won't suffer the same overheating problems as thousands of others had to put up with, with their 90nm consoles...right? Well, this guy's console has already "apparently" overheated, and he claims that he has the new 65nm chip.


The above image is from Image Shack
News Source :: Kotaku