As suspected, Apple today started taking orders for the new Mac Pro. The new systems are now known to include three configurations and include not just the 2.8GHz quad-core and 2.4GHz eight-core systems but a third 12-core, 2.66GHz model. It comes outfitted with the same 6GB of RAM, 1TB hard drive and Radeon HD 5770 video but, due to the cost of the more exotic Xeons, starts at $4,999.