OS X Mountain Lion DP3 Build 12A206j Released

May 16, 2012 - 13 Comments

OS X Mountain Lion icon

Apple has pushed out another update to OS X Mountain Lion Developer Preview 3, as the anticipated summer public release of OS X 10.8 nears. The new build is 12A206j and can be downloaded through the Mac App Store by any registered Mac developer running 12A193i or later of Mountain Lion.

The latest build includes noticeable changes to Notification Center, Notes, Share Sheets, and several other prominent OS X 10.8 features. 12A206j also features many bug fixes though it continues to have a handful of prominent issues that are yet to be addressed. Additionally, some 2007 MacBook Pro models are currently missing support in the new version, though that is expected to be resolved in a future update.


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Posted by: Matt Chan in Mac OS, News


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  1. Isidoros Sklivanos says:

    All you wait for mountain lion you are jerk consumers andbecause of you os x going to be new microsoft windows.

  2. anna says:

    very good and very quick :)
    even better as lion

  3. Romney says:

    I think it will ship with the new MacBook line mmmK.

  4. Paul says:

    Beta Mountain lion is better than lion? I may upgrade then. I have a 2010 17″ MBP and I have read many complaints about not working well with the 2010 line. I am still snow leopard. Any one try this on a 2010 line?

    • cnn says:

      i too have a 2010 mbp and hope that is not the case. if anything try airparrot for mirroring

    • John says:

      Hey Paul,
      I am currently running OSX Mountain Lion on my mid-2010 series Macbook Pro and I am definitely enjoying it! I used OSX Lion before and that was a wonderful upgrade from Snow Leopard. The overall UI of OSX hasn’t changed much from Lion to Mountain Lion but mainly more features were added to bring it closer to the UI of iOS, therefore making the iPad, iPhone, and iPod, work even better with your Mac. I would say the most outstanding feature is iMessage, very smooth. Hope this helps:)

  5. Alberto says:

    Run very smoothly… better than Lion for sure, even if is in BETA stage.

  6. Mark Pointer says:

    Has anyone got Mac screen Airplay mirroring to Apple TV (3rd Gen) working yet with Mountain Lion?

  7. Romney says:

    I think it will ship with the new MacBook line K

  8. Romney says:

    I think it will ship with the new MacBook line

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