Apple’s new version of OS X Lion is now available at the Mac App Store for $29.99, according to Thisismynext.com.Lion brings plenty of changes that will come as a surprise even to the most dedicated Mac user, many of them due to the aforementioned iOS-ification of OS X. Lion manages system resources much as the iPhone does, killing and freezing apps, and doing away with those little blue light indicators in the Dock. A ton of new gestures have also been baked into the OS, including three-finger swipes all over the place, and four-finger pinch in. Pinch to zoom is also built into Safari just as it is in mobile Safari.

Also on offer at Lion are, Versions and Auto Save, which will make document editing in real time a much happier, less tragedy-prone affair, and AirDrop, which facilitates fast file transfers between Macs on WiFi. There are a ton of other changes all over the place.