Apple may be hoping that Mac operating system release number eight becomes the eighth wonder of the technological world. The company released a developers preview of the OS, code-named “Lion,” on Thursday. However, Lion is primarily a “user interface evolution rather than a back-end functionality upgrade,” according to Appitalism founder and CEO Simon Buckingham. Mac OS X Lion features Mission Control, a new Mac view; Launchpad, a new app home; full screen apps that use the entire Mac display; and of course, the new Mac App Store.