Mountain Lion is here for every Mac user. It is now available to the public and is exclusively available at the Mac App store for $19.99. Now this new OS will have some nice features to it including the improved iCloud integration with support for notes and reminders, iMessage support via the new Messages application, Notification Center, Power Nap updating during sleep, Dictation, enhanced sharing tools, Game Center, improved security with gatekeeper, and more.
