The Inq has some details on AMD's processors that will counter the Intel Conroe XEs and the Intel Kentsfield processors:
The next gen of AMD FX chips will have the full 'big cache' Opteron level of L3 cache, most likely 4MB. Until software becomes much more threaded than it is now, this will be more than enough to keep up with the competition, or at least keep things credible. For the first time, the line will be more than a plus one bin and no hard multiplier lock. AMD may wait until it sees competition before unleashing this, but it will happen sooner rather than later.