Windows 8.1 ISO went up on TechNet and MSDN. 64 bit version 3580 meg download, 32 bit version 2660 meg download. Has anyone installed it yet? I installed it and the first thing I checked was this new Start button. What a joke, you click it and its like hitting the Windows key. It just puts you into the metro. BTW, this is a preview! That means it will most likely time bomb at some point.