OS X Mavericks (logo, full size)

Sticking to its accelerated releases schedule for operating system upgrades which now calls for one major OS X release each year, Apple’s software teams have now began work on what would become the fourth major update to OS X Mavericks.

Simultaneously, its main group continues work on OS X 10.10, which will be previewed at next Monday’s WWDC alongside iOS 8 and other “exciting” goodies.

The first OS X Mavericks 10.9.4 beta (build 13E9) has now been seeded to Apple’s registered Mac developers. The work-in-progress software should become available to the general public through the company’s OS X Beta Seed Program

You can apply the beta by choosing Software Update from the Apple menu or download it standalone through Apple’s Mac Dev Center. The delta installer comes in at 440.33 megabytes. The full combo installer is a 903.33MB download.

OS X 10.9.4 email message

Seed notes make no mention of specific new features at this point, but I’ll update the article when/if I dig up something noteworthy. Given that this is the fourth major release and that Mavericks is now halfway through its lifecycle, 10.9.4 should be mostly about bug fixes and stability improvements.

I hope it fixes the annoying issue where Wi-Fi would disconnect after each wakeup. I’m also tracking issues with the overall reliability of Wi-Fi connections, especially when connecting to a Wi-Fi Personal Hotspot on my iPad Air.

Moreover, Mac Pro owners are complaining about inability to use more than two displays at a time after installing 10.9.3 so hopefully 10.9.4 will fix that, too.

Earlier this month, Apple delivered a third major Mavericks update which enables proper Retina support for external 4K displays attached to compatible Macs, an improved syncing of calendar and contact items, more reliable VPN connections using IPsec and more.

  • bgk17


  • David Gitman

    7.1.2 is close?

    • Framboogle

      More like iOS 8 beta

  • Domodo

    I hope OS X gets a major UI refresh.

    • Framboogle

      The current UI is pretty good. I can see it happening, but it doesn’t seem necessary. “Flat” UI’s can look pretty bad, just look at Windows 8 for example.

      • Jan Janneck

        In my opinion Windows 8 doesn’t look bad it all, it’s just not very functional.

      • Chun-Li aka ThunderThighs

        Windows 8 look good like that. I upgraded my windows 7 after seeing how good it looks. It’s just the functions

  • iAdam1n

    It’s not in the public beta seed program as the post says.

    • coming soon to seed program, updated the post

      • iAdam1n


      • iAdam1n

        Curious, is that a guess or confirmed because it’s still not there?

  • ProfessorX1®

    What the f*ck? Why is Apple going to show off OSX 10.10? Where is OSXI? (11.0)? Why Apple. Why make us wait??

    • Eric Mason

      OS X is the “brand” more or less. They can keep going forever with OS X using versions 10.0 – 10.99 if they so choose. I don’t see them changing the name of the product from OS X to OS XI any time soon.

  • Where is it for the new free apple beta osx??