Apple OS X Mountain Lion (10.8) in-depth preview

We got our hands on an early version of the OS -- so early, in fact, that it's something of a pre-developer build. (Heck, there isn't even an image of a mountain lion to choose from in the default wallpapers.) The version available to developers today should address some of the kinks we encountered during our testing, not that we suffered all that many hiccups. So what's new in this version?

http://www.engadget.com/2012/02/16/apple-os-x-mountain-lion-10-8-in-depth-preview/