When Mountain Lion officially launches in the Mac App Store, simply visit Apple’s Up-To-Date page. Fill out a short form with basic contact information and the serial number of your new Mac. Once the information is verified, Apple will email you a redemption code to claim a copy of Mountain Lion in the Mac App Store.

The new version of OS X is expected to be released following Apple’s Q3 earnings call scheduled for July 24. You will have 30 days from the release date to take advantage of this free upgrade.

Mountain Lion’s core features are inspired by iOS to bring a more unified experience across all Apple devices. New features such as Messages and Notification Center will give you a taste of iOS on your Mac, while enhancements like Gatekeeper will help keep your system secured.