Leopard is Apple's latest version of the Mac OS X operating system.  Leopard has been designated a version number of 10.5.  Leopard is the 6th version that Apple has released since early 2001. Leopard contains more that 300 new features when compared to Tiger, the prior version of Mac OS X.

This guide will describe the process of upgrading to Mac OS X Leopard.  As Leopard has not been released yet, we've compiled this information based on our expectations and experience with previous upgrades of Mac OS X.  This guide will get you to start thinking about the steps involved a Mac OS X upgrade.  If this will be your first ever Mac OS X upgrade, you'll want to pay close attention.  We describe the process in a few high-level steps.  Before we get started, we'd like to point out that you will want to verify the system requirements as outlined by Apple.  If you have a recent Mac, you'll shouldn't have any problems upgrading to Leopard.

Recent Mac purchasers who have purchased a qualifying new Mac or Apple Certified Refurbished Mac (see models below) on or after October 1, 2007 that has Mac OS X Tiger installed can upgrade to Leopard for free.  Apple is offering the upgrade as part of the Mac OS X Leopard Up-to-Date Program.  The qualifying Mac models are as follows: