It seems that Apple is building a higher walled garden for OS X in the form of signed binaries. They're not mandating every app come from the appstore but instead have a level that allows developers to 'sign' their binaries with their own developer ID (which of course costs $99USD/year). Or the user can go rogue and 'Ctrl-Click' install any application.
http://www.apple.com/macosx/mountain-lion/security.html Personally I'll probably choose Mac App Store and identified developers. (I imagine this will be the default). --------------------------------------------- Francis E. Reyes M.Sc. 215 UCB University of Colorado at Boulder