AMD's Fusion project will get to quad-core. Of course the first one is a dual-core, aiming for the Brazos platform and after that there should be a Llano version of Fusion that comes in dual and quad-core versions.
We've already said that Llano dual-core has a 20W TDP and some of them will get even to 40W, but more importantly the quad-core Llano with integrated graphics should set to 55W TDP.
This is not that bad considering that Fusion has most parts of chipset, graphics and a quad core CPU. The launch date is again 2011 and we cannot get more precise than that.
The platform supports DDR3, and is a 32nm product. As we said many moons ago the 45nm version of Fusion has been cancelled a while back.