AMD plans to launch two six-core desktop CPUs next year. This should happen in Q2 2010 and if AMD holds on to this date, it might come a bit later than Intel’s Core i7 980X.
AMD’s six-core 45nm part is codenamed Thuban and it comes with 6MB L3 cache, C-state performance boost as well as DDR3 1333MHz support. As we said before, it supports AM3 motherboards and it should work in most existing models.
I don’t have any specifics about the clocks or what will be difference between these two SKUs, but I can confirm that they are planned.