The Golden Master seed of OS Xhas been released to developers. Golden Master (GM) builds are typically the release version of software, indicating that a public version will arrive very soon. The GM build is 12A269 for Client and 12S302 for Server.
Registered developers can get a download code forGM directly from ’s Dev Center, that code can be redeemed through the App Store as usual. Developers can also download a new version of Xcode 4.4 development suite.
OS X Mountain Lion is versioned as Mac OS X 10.8, and includes over 200 new features, many of which are borrowed from, including iMessage, Notification Center, Share Sheets, Center, Notes, Reminders, Dictation, and significantly enhanced iCloud integration.
OS X 10.8 Mountain Lion Golden Master