AMD seems to refer to their modules as 2 core parts, 4 modules = 8 cores. Can't say for sure, but since they've been labeling Bulldozer as a 4-8 core part in the roadmaps I'm sure they'll refer to their Integer core count for how many cores they have.
It'll be interesting to see how it stacks up compared to current I7 4core/8thread, and next years 8core/16thread from Intel.