iOS apps aren't the only thing Apple's mobile operating system has for Mountain Lion--the Mac OS will also receive iOS's notifications system when it arrives later this summer. will keep track of your app updates, Messages, emails, calendar invites, and--perhaps--even third-party app alerts.

New names are fun; new features are better. There are a whole bunch of new system options , like improvements to Dashboard and more Accessibility changes.

Your system apps will get a few , too: has a unified search bar and new share features; sports inline find, notification settings, and VIPs; and Preview receives a major overhaul.