Screen Shot 2013-08-07 at 1.03.59 PM

Just over two weeks following the release of OS X Mavericks Developer Preview 4, Apple has seeded the 5th preview to developers via the Mac App Store Software Update tool.

Screen Shot 2013-08-07 at 3.46.29 PM

Also released is OS X Mountain Lion 10.8.5 build 12F33. That build comes one week after the previous 10.8.5 seed. Safari 6.1 beta 5 has also been released for Mountain Lion.

The new Mavericks beta brings iBooks app. Full tour here.

If you find anything new, you can let us know at We will have a running list of changes in this post (below).

New iPhoto version in Mavericks:

Screen Shot 2013-08-07 at 1.54.28 PM

– Major performance enhancements in Mavericks

Leave a Reply

Please log in using one of these methods to post your comment: Logo

You are commenting using your account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s

13 Responses to “Apple releases OS X Mavericks Developer Preview 5, seeds OS X 10.8.5 build 12F33”

  1. Im beginning to think that iBooks will not be bundled with Mavericks, but will be a separate app download from the app store. Otherwise, why wouldn’t they have included it in the beta by now?


    • Steve Grenier says:

      First off, it probably will be separate, like on iOS. As for it not being included, maybe it wasn’t done? Writing apps takes time you know :)


  2. iBooks is included in this DP.


  3. I guess I should have waited till I actually updated before I commented…

    The iBooks App is here!!!


  4. Wow, that is one hideous looking app. So boring… I want my wooden bookshelf back :(


  5. I wonder if they fixed the performance issues with iPhoto. Probably not considering they never have for the last how ever many years.


  6. Lelouch-sama says:

    Scrolling in Mission Control is removed. Yeah!


  7. The limit of folders in LaunchPad has been either removed or changed.


  8. iTunes Notifications are new.


  9. ice2192 says:

    changing background went back to “Set up desktop picture” after right click. before it was “Services>Set as desktop picture”


  10. do you guys have problems with iMessages login?


  11. Hey

    I am unable to upgrade from DP4 to DP5 . AY FIX ?