After a false start just a few days ago, Apple has officially enabled its OS X Mountain Lion up-to-date program now that the new OS has officially become available. The up to date program allows anyone who has purchased a Mac between OS X Mountain Lion’s June 11th announcement at WWDC and today. Additionally, Apple has opened up a separate up-to-date program for those purchasing a new Mac starting tomorrow that does not ship with the new OS pre-installed.