I'm a bit puzzled as to why this is labelled an SOC instead of an APU. Have they integrated all NB+SB functions into the APU? Does this entail any IO changes? And what does this mean for socketed platforms? Could we actually see socketed SOC motherboards with no chipset, only controllers and paths linked directly to CPU PCIe lanes? If this was to work, it would be an awesome cost saving measure (I can't imagine the chipset being the cheapest part of a motherboard, after all), but I can imagine this causing all kinds of trouble due to motherboards with different connectivity. Am I wrong in thinking this would require an entirely new type of BIOS? Or have I misunderstood this entirely?
Edit: Reading AnandTech's coverage of this, they are only naming Carrizo-L an SoC, not Carrizo, which would make it more of a direct successor to Kaveri. This makes more sense to me at least.