There are two ways to qualify for a free upgrade to Mountain Lion. This post will provide you the information necessary to upgrade to the world’s most advanced desktop operating system.īefore you upgrade, you should check to see if you qualify for a free upgrade and also check to make sure your Mac meets the requirements for Mountain Lion. Mountain Lion adds over 200 new features to your Mac, including many popular features you are already familiar with from your Apple mobile devices such as the iPhone and iPad. Apple has released their newest operating system, OS X 10.8 Mountain Lion.