OS X Mountain Lion build 12A239

12A239
Build of OS X Mountain Lion
OSX-10.8-12A239-Desk.png
Architecturex86_64
Compiled2012-06-07
Timebomb
Works in
AboutOSX-10.8-12A239-About.png

OS X Mountain Lion build 12A239 is the official Developer Preview 4 build of OS X Mountain Lion, which was released to developers on 11 June 2012 during the 2012 Worldwide Developers Conference.

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