Mac OS X Mountain Lion Unveiled

Apple, not resting on it's software-related selection of cats, has released the developer preview of Mac OS 10.8, more easily acquainted to most as 'Mountain Lion.'  If one thing can be taken from the new implementations and functionality, it's that the desktop is moving further into the space of iOS.

So what are the major new upgrades...or old, depending on whether you're willing to consider ideas already found in Apple's touch-orientated operating system as 'new?'