HotHardware published a review on Apple OS X 10.8 (Mountain Lion)

OS X is a significant step forward for Apple and it has reached a very mature stage. Obviously, we've only got another point release before we roll to OS 11, or whatever Apple ends up naming it. To best understand what makes this edition worthwhile though, let's look at what's new. The actual desktop space of OS X 10.8 isn't dramatically different than what you'll find in 10.7. At a glance, it may be tough to see what's actually different in Mountain Lion. But it's just a reminder that most point updates are subtle, and many of the changes are under the hood.

Mountain Lion is essentially a refined version of Lion, with a ton of useful additions that mostly tap into the iOS ecosystem. Those who use iPhones and iPads will greatly appreciate the extras; those who do not use an iOS device. Mountain Lion might give you pause to consider one.

  Apple OS X 10.8 (Mountain Lion) Review