It is now available  at only $29 in the Mac app store to update to the latest Mac Operating system OS X Lion.  Pretty amazing there is no DVD as the OS is delivered through the Mac App Store. Just remember my post (Mac OS X 10.7 (Lion) - Hear Me Roar on App Compatibility) that not all hardware or software is yet ready for the new Mac Operating System including the AutoCAD for Mac which is planning a compatibility update soon. http://www.apple.com/macosx/ Go to the original post...