Okay, so the new Mac Pro hasn't been officially announced yet, we don't know about prices, configurations, or really much of anything substantial hardware-wise. We do know that the Mac Pro will come standard with two workstation-class GPUs, and a Xeon CPU, and on that basis-alone, I think it's fair to say that the new Mac Pro is aimed exclusively at true professional users needing a lot of number-crunching. In other words, it's a workstation, not a personal computer. In the past, prosumers and hobbyists have used low-end Mac Pros. They could use them for gaming, for heavier computing tasks, stuff that an iMac or miniMac couldn't serve them well on. It seems, with the new Mac Pro being decidedly high-end, that this market will have no where to go. I believe, in light of Apple bumping the Mac Pro up a notch towards high-end workstation, with no apparent low-end prosumer model, the time has finally come for the xMac, a headless Mac with desktop-class hardware and a bit of expandability (PCI slots for gaming graphics cards). The time has never been more right. Mac sales are continuing to rise, so Apple's market is expanding enough (possibly) for a new model to enter. With the Mac Pro clearly designed as a workstation, the iMac as an all-in-one, and the miniMac as a low-end box, I believe there would be limited cannibalization of any existing product line if they added a traditional tower. Then there is the growing Mac gaming segment. Without an xMac, the efforts of companies like Valve (and yes, even EA *shudder*) to move more aggressively into the platform would be left hanging without anywhere to go. All of the game developers, drawn into Apple's ecosystem and technologies with iOS, would have no real Mac to create high end games for. I think it's entirely possible that the new Mac Pro will allow for more low-end gaming- or prosumer-oriented configurations. I think it's also possible we'll see two announcements later this year, with a new product category introduced next to the new Mac Pro to take up room between the iMac and the new Mac Pro in the power spectrum. If ever Apple was going to do it, now's the time.