So today, we're announcing Update Engine, a Mac OS X framework that can help developers keep their software up-to-date. Update Engine can update all the usual suspects, like Cocoa apps, preference panes, and screen savers. But it can also update oddballs like arbitrary files, and even things that require root—like kernel extensions. On top of that, it can update multiple products as easily as it can update one.

Read more here including a link to a video overview [googlemac.blogspot.com].