Apple's OS X Lion Up-To-Date Program, Upgrade To Lion For Free
Before you go out and spend $30 on OS X Lion, if you've recently purchased a Mac with Snow Leopard or Snow Leopard Server on it, specifically between June 6, 2011 - July 21, 2011, your copy of the just released OS X Lion will cost you nothing. A free upgrade courtesy of Apple via their online Up-To-Date Program. To take advantage of this, you will need to complete a simple online form to get your OS X Lion or OS X Lion Server code which can be redeemed in the Mac App Store. Head on over to the OS X Lion Up-To-Date Program page to get started.