The next Apple operating system, Lion, which is expected to be released later this summer, will be the first OS released through the company's Mac App Store.
AppleInsider reports, while Lion will still be available on physical media, the preferred method of purchase will be downloading via the Mac App Store.
Lion is expected to be announced at the Worldwide Developers Conference in San Francisco, June 6 - 10.
Users must be running OSX 10.6 to use the Mac App Store.