Apple seeds OS X 10.9.3 build 13D55 to developers

By , Apr 29, 2014

OS X Mavericks (Desktop, MacBook)

Apple has seeded another beta for OS X 10.9.3 to registered Mac developers this afternoon. The update comes just one week after the seventh beta was released, which brought about few notable changes.

The new build is available to developers via an update in the Mac App Store or as a download on Apple’s online developer center. It does not, however, appear to be out in Apple’s new Beta Seed program yet…

We’ve seen a number of enhancements in 10.9.3 thus far, including the addition of a new native ‘Retina’ resolution option for 4K displays and the restoration of the ability to sync local contacts and calendar info.

Today’s build is labeled 13D55, and Apple continues to ask developers to focus on Graphics and Audio Drivers, Mail and Safari. As always, we’ll be sure to let you know if it also adds any new features worth note.

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  • David Gitman

    Can’t wait for ios 8 beta ^^

    • Darren

      You’ll be waiting for a little over a month for that.

      • David Gitman

        worth waiting :P

  • Anthony Snyder

    Wait… so they are still doing beta for OS X even though the next OS X is supposed to be announced in a little over a month..

    • At

      I would imagine these beta builds are required to be able to upgrade to the new release. If I remember correct, there was betas for mountain lion up to the release if mavericks and needed to install the latest version before being able to upgrade to mavericks. The next version is supposed to be able to support 4k monitors for iMacs and MacBook pros.

    • Eric Mason

      They always do. I’m sure there will be an OS X 10.9.4 or even 10.9.5 before OS X 10.10 is released. They are previewing OS X 10.10, not releasing it.

      • Stephen Hagans

        Hoping for a complete redesign to match iOS 7/8

  • omrishtam

    shouldn’t it be “apple seeds OS X 10.9.3 build 13D55″ without “to developer”, since they made the os x betas available to everyone

    • Eric Mason

      No. It’s not available to those who are not developers and signed up for the Beta seed program. It’s only available to developers at this point.

      Second paragraph in the article mentions this…