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Fourth OS X 10.8.5 build reaches developers

updated 04:42 pm EDT, Wed July 10, 2013

No known issues

Apple is now seeding a fourth beta build of OS X 10.8.5 to developers. Listed as 12F20, the build follows one week after 12F17. There are no known issues, and Apple is again asking developers to focus testing on graphics, Wi-Fi, wake-from-sleep functions, mobile device management, and PDF viewing and accessibility.

Once it's finished, v10.8.5 may be the last major update for Mountain Lion. Apple is currently at work on OS X Mavericks, which will ship sometime in the fall. The upgrade will likely arrive simultaneously with new Macs.

by MacNN Staff



  1. jimoase

    Fresh-Faced Recruit

    Joined: 04-15-08

    Any chance the 3 to 10 second stuttering problem has been solved?

    Lets stamp out beach balls when viewing videos and doing keyboard entry.

  1. Charles Martin

    MacNN Editor

    Joined: 08-04-01

    No stuttering problem here, and I'm on 10.8.4. Are you by chance presuming a local problem is universal just because you're experiencing it? Have you ruled out other factors?

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