First off I apologise for the 2 1/2 month thread necro - but I'm not sure how to make new posts on this forum yet.
Personally I wish that AMD would get us a dual socket APU motherboard. I think if they ever did allow dual socket APU motherboards that they would not be able to CrossFire the graphics (although with HSA, hUMA, and Mantle perhaps it is possible). I would love a dual socket board though for 8 true Steamroller cores + the benefits of the integrated graphics doing any extra available processing. I think it would allow a true high performance option for entheusists and at a budget price compared to most Intel offerings. Time will tell as HSA is adopted and used.
My message to AMD is to PLEASE make an Opteron verson of the APU and enable us to have at least dual socket motherboards. Even a 2p motherboard with a single x16 PCI-E slot would satisify many of the AMD loyalists such as myself.