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Wednesday, June 19, 2013, 01:57 pm PT (04:57 pm ET)

Apple releases first OS X 10.8.5 Mountain Lion beta to developers

Less than one month after debuting OS X 10.8.4, Apple on Wednesday seeded the first OS X 10.8.5 Mountain Lion beta build to developers, with the latest maintenance update possibly looking to stabilize the operating system ahead of an OS X 10.9 Mavericks launch this fall.

12F9


People familiar with the beta, dubbed build 12F9, said Apple is asking developers to focus on existing Mountain Lion features, including Wi-Fi and graphics.

The latest beta comes two weeks after Apple issued the OS X Mountain Lion 10.8.4 maintenance update to Mac users, which brought Wi-Fi improvements, compatibility with Microsoft Exchange and a host of bug fixes.

Apple is expected to release the next-generation OS X 10.9 Mavericks this fall, and a preview has already been seeded to the development community.