I purchased my mac pro a couple of months ago, and I am extremely happy with it. However I am very aware that Nehalem is coming, and my personal opinion is, it will be in the Mac Pro by WWDC '09. I will be keeping my eyes open for strong rumours so I can try and flog my Harpertown just before (or as close as i can get to) release. My plan all along has been to wait till Nehalem but I needed the machine too much, so I am avoiding a chunk of depreciation with HE discount and buying my own RAM and HD's. I know some of you will say, 'What you have is fast enough for the next 2-3 years' but my plan is to avoid losing 90% value on a machine and resell with as little depreciation as possible. However, as exciting as this new architecture will be, what else do you think will come with the Nehalem Mac Pro. A case redesign? Blu-ray writers? More RAM/HD as standard? Throw your ideas in the circle.