Where did reports of these parts first come from? There is almost no mention of them on Google. As some others have noted, it seems Apple is waiting on some part (remember the first unibodies? How they were a few months after everyone else was selling laptops with new Intel CPUs, since Apple was waiting for the 9400 to be available?) It's possible they were waiting on the GTX 460 as well, since it sits in a similar price/performance bracket that the 8800GT and 4870 occupied at the time of those launches. But that is out now, and still no Mac Pro, unless Apple is hiding the whole thing for more availability of the 1GB version. (seems like it would be easier to announce the new MP and just delay shipping of machines that have a BTO 460, now that the card is launched) So....if they are waiting on a part, it is probably these two CPUs, rumored lower end hexacores that would allow for a sub-$3k base model that is clearly superior to the iMac. Anyone have more info on them?