When 10.5 came out, a lot of unsupported systems only required a minor hack to make 10.5 install (copy the DVD to HD, edit a file, burn back to DVD). With luck

When 10.5 came out, a lot of unsupported systems only required a minor hack to make 10.5 install (copy the DVD to HD, edit a file, burn back to DVD). With luck, there will be an easy hack this time as well. I believe the factor that decides which machines got cut off is the lack of 64bit EFI, which Apple requires for booting a 64bit kernel. Some people have already worked out how to use hackintosh tools to boot from Legacy Mode into a 64bit EFI and then into a 64bit kernel on the 2006/2007 Mac Pros, which apparently increases expansion card compatiblity (particularly making it possible to put unflashed PC video cards in the machine). Also, after doing this, some of the older MacPro video cards will be unsupported (such as the 7300GT). A suitable Radeon replacement is probably cheap though. It is too early to tell, but with luck the same thing can be done by dedicated MacPro owners to get 10.8. Personally, I'm very disappointed that my wife's MacBook is also on the unsupported list. I will probably end up just replacing her laptop rather than trying to hack it.