As the tittle says. As the mac pro's have been moving towards 8 Cores and im guessing with this Nahalem thing next year 16 Cores will the iMacs get a 4 Core soon? Im thinking about buying an 3.06 iMac but Im worried that a month later a Quad core will come out and take advantage of that Snow Leopard . Can you upgrade your CPU in your iMac ( im guessing strictly not ) ? So yeah thoughts on Quad Core and when abouts they might get intro'd.