Today, new Macintosh OS was released.
For getting new OS, you need to prepare the Macintosh installed above MacOS 10.6.6.
When you access to “Mac App Store”, you will be able to see MasOS Lion.
I will report the detail information because I already upgraded my Macbook Air. Viscerally, I feel that new OS has more smooth operation and speedy performance. However, you need to pay attention if you use the software powered by PowerPC. MacOSX Lion does not support the Power PC. Therefore, you need to check your software and driver like printer before upgrade MacOSX Lion.
21 July, 2011: Chief of Information processing office: Kitani.