This makes sense for non-Mac Pro machines, although so far it doesn't seem to be the case as Mountain Lion will actually run on those machines if they're added

This makes sense for non-Mac Pro machines, although so far it doesn't seem to be the case as Mountain Lion will actually run on those machines if they're added to SupportedHardware.plist [0]. However, in the case of the Mac Pro it's hard to see the restriction as anything other than arbitrary and frustrating. 0: http://osxdaily.com/2012/02/18/install-os-x-mountain-lion-developer-preview-on-old-unsupported-macs/ http://osxdaily.com/2012/02/18/install-os-x-mountain-lion-de...