What can we say? It's more of the same: this release introduces a slew of feature enhancements, and of the ones Apple is highlighting, practically all were borrowed from iOS. And we do mean borrowed: the company has cloned some of the best features from its mobile platform. Until now, Mission Control has roughly approximated the iPhone's grid layout in a desktop setting -- but that feature always felt like a bit of an aside, something the user could safely ignore if he or she saw fit. This time out, the mobile influence is far more robust, baked in to the point that it will almost certainly force upgraders to adjust their workflow.

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?

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

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Seems really good.. crossgaming with the iOS games, messages, icloud, notification center, blurs the line of your mobile/ipad and desktop

Isn't a mountain lion kinda like a snow leopard?

Nah, a mountain lion is kinda like a Cougar.

I thought a mountain lion was like a Puma (OS X 10.1).

Anyway, I'm surprised they're releasing an upgrade so quickly. Snow Leopard (10.6) was out for what 2 years? before Lion (10.7) released. Lion just released this past July and by Summer, Mountain Lion will be released!

Preemptive strike against Windows phones and/or more incentive to chose Apple over Samsung (even if Apple sold more phones that the year before?), just in case?

Sounds good, the focus on cloud services we are getting from all the OSs these days is very nice!

Yeah, Apple is moving OS X to an annual release cycle, just like iOS.

Honestly, this upgrade feels like the most incremental update to OS X ever. Feels more like a suite of applications than an OS upgrade. Though for $30, it's hard to complain. I'm looking forward to iMessage support and Airplay, myself.

The most interesting part to me is that the China-centric upgrades warrant their own bullet point. China is Apple's fastest-growing market, and Apple is clearly determined to make the most of that.

not really, a cougar is a lot more like your mom.

i am worried that apple will run out of cats pretty soon

Mac OS X Cougarman lol

They've been using Mac OS X branding for 10 years, they'll come up with something new soon I bet.

In other news, I have a macbook that I got from a friend.