according to cpu world: It was announced a week ago that Intel had discovered a bug in the Sandy Bridge-E processors, which made us worry about a possible delay for the Xeon Sandy Bridge processors, which are very close in their conception. This delay seems to be confirmed according to CPU-World. The new Xeon E5 processors, absolutely necessary to a new model of Mac Pro, which were scheduled to ship during Q3 2011 will now ship in Q1 2012. At that moment, Apple will have everything, including the X79 controller, to make an entirely new Mac Pro. There will be a lot of choice to make a low end model with a quad-core clocked at 3.6 GHz and a high end one with 2x 8 cores clocked at 2.9 GHz. The only missing type will be 6 cores processors, which will ship even later. Sounds like anyone hoping for a new 6 core box will have to wait a long time. I would assume that the difference between the speed of a 16 core 2.9 to a 4 core 3.6 would only be realized on high intensity cpu calls?