It’s hard to believe that it was just a little more than a year ago that Apple released OS X Lion. Only twelve months later, and we’re now staring right down the maw of Apple’s ninth major release of Mac OS X: Mountain Lion.

OS X 10.8 Mountain Lion signifies a new approach on Apple’s part towards OS X updates: instead of going years between major releases, Cupertino is trying to take the rapid release approach that has worked so well for them with iOS and apply it to the Mac.

Mountain Lion, then, feels in many ways less like OS X 10.8 than OS X 10.7.5: a smaller, more tightly focused update continuing what OS X Lion started, taking iOS’s best ideas and bringing them to Mac.

Thanks to major breakthrough features like iCloud syncing, Notification Center, Sharing, AirPlay Mirroring and more, there’s less of a distinction in Mountain Lion between the Mac and iOS than ever. But is that a good thing, and how will it change the way you use your Mac?

Remember when we told you about the amazing Reflection Mac app that lets you mirror your iOS device screen over AirPlay? Well, the developer of Reflection just updated the app with support for Apple’s latest iPad and its beautiful Retina display.

The huge update also includes support for recording audio as well as video from your iPhone or iPad. Several new features, including full screen ‘theatre’ streaming to your Mac, have been included in version 1.2 of Reflection as well.

iOS 5 beta 3 introduced a number of new features that weren’t present in the previous two developer releases, including a selection of new sounds and a handy new ‘AssistiveTouch‘ menu. One thing you may not have stumbled across, however, is AirPlay mirroring for FaceTimes calls on the iPad — allowing you to see your caller bigger than ever before on your HDTV.