The new Mac OS has taken a lot of inspiration from iOS, and includes features such as an app Launchpad, full-screen mode and more. OS X Lion is available only on Mac App Store and there won’t be any physical copies of it, and is very reasonably priced at $29.99.
You Can download OS X Lion by searching for the operating system in the Mac App Store. Read More
http://appadvice.com/appnn/2011/07/os-x-lion-now-available-to-download-in-the-mac-app-store