AMD roadmaps ahve been showing these for almost a year, they will start with low end parts this year and high end parts starting at the end of 2009, with the best ones coming in early 2010 with the drop in process, putting a gpu on the cpu can result in massive gains in performance, as the cpu to gpu path way is direct, which is one of the bottle necks in the system today, also system memory path way is also direct as the memory controller is on the chip most likely out side the main cores so the gpu will have direct access to the memory controller, and with the memory controllers capability to address more than bank of ram, and even differnt types per bank, its possible we migth see gddr sticks available for sale seperately and motherboard with seperate banks for the system memory and graphics memory.

course most this comes from articles already written and which they themselves are speculation based on what the amd's current crop of cpus can do already, that just isnt being used except for multi proc. opteron boards.

This tech could signifigantly change pc architecture or it may flop or end up a niche market for laptops and business pc's, compatability and standards will determine its ultimate fate.