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.
I am experimenting on one of my MacBooks today. Have you installed your OS X Lion yet, what do you think?
Cheers,
Shaan