updated 02:42 pm EDT, Mon July 23, 2012
Form should return after imminent launch
(Corrected eligibility window) Today Apple briefly posted a form for the OS X Mountain Lion Up-to-Date Program on its website before pulling it down again, accounts say. The program is designed to ensure that people who have bought a Mac since June 11th can upgrade to Mountain Lion for free, up to 30 days past when they made their purchase. People who did manage to submit a form were sent two emails: one containing a password-locked redemption code, and a second email with the password in question. None of the redemption codes are believed to be working at the Mac App Store.
Mountain Lion should be released sometime within the next week, since Apple promised a July launch at last month's WWDC gathering in San Francisco. The upgrade will bring a number of changes to OS X, such as more integration of iCloud and iOS apps, and the Gatekeeper app security system.