Now for those of you who think quad core chips are a far way away, all I can say is that they will defintly be shipping by the time WWDC 07 roles around. Now the Mac Pro's right now are dual socket systems, each socket having a dual core. So yes in essence it's a quad core system. When the quad core chips come out, WWDC 07 will bring in the new fastest mac ever created with 8 cores, but at the same time i think they will introduce a sku for the rest of us. a single socket mac pro! it makes sense since you'll still be able to call it a quad, and if they let you BTO it with a dual core instead of a quad core chip it will be even chaper.