My last Mac Pro purchase was the last PPC G5 Apple made. i'm tired of most software updates now requiring Intel Macs but don't want to go out an buy a new Mac Pro if the next version is just around the corner. It looks like we're about 40-50 days from the average length of time between Mac Pro model updates. Just wondering if anyone has a better estimate of when new models will be announced. Can anyone give me a very basic summary of the kind of speed increases I'll see when I go from a top of the line G5 PPC Mac to say an 8 core middle of the road Ghz latest generation Intel Mac Pro? I expect a great leap in performance. Am I correct?