Apple Seeds OS X Mavericks 10.9.2 Build 13C48 to Developers - MacRumors
Skip to Content

Apple Seeds OS X Mavericks 10.9.2 Build 13C48 to Developers

by

Apple today seeded build 13C48 of OS X 10.9.2 to developers, marking the fourth beta iteration of 10.9.2. The release comes a week after the third OS X 10.9.2 beta, build 13C44, and a little over a month after the first OS X 10.9.2 beta.

13c48
The update is available to registered developers through the Software Update mechanism in the Mac App Store as well as through the Mac Dev Center.

Apple continues to ask developers to focus on mail, messages, graphics drivers, VoiceOver, VPN, and SMB2. Earlier betas of OS X 10.9.2 began allowing Mac users to block people on iMessage and FaceTime, as can be done in iOS 7, and also introduced FaceTime Audio.

Related Forum: OS X Mavericks

Top Rated Comments

164 months ago
That's the theoretical hardware support. It does not mean that OS X 10.9.0-10.9.2 is the best OS for 4K displays.

The BEST OS for 4K displays... let's throw some subjective squabble out there rather than answering the actual point.

It clearly proves that Apple supports 4K displays (MULTIPLE 4K displays.) Some aren't supported and there will be subjective flaws...etc as usual, but there is support for 4K displays. Saying there isn't is incorrect...
Score: 11 Votes (Like | Disagree)
Merode Avatar
164 months ago
What is reasonable scaling ? It's a 4K display. If you want lower resolution don't get a 4K display.

Scaling is not reducing resolution.
Scaling is keeping high resolution and just making UI larger (which is perfectly fine and reasonable).
Score: 8 Votes (Like | Disagree)
SvP Avatar
164 months ago
Thanks for your sources. Very convincing. ;)
you're kindof being an ass, but i wanted to see for myself: http://support.apple.com/kb/HT6008?viewlocale=en_US&locale=en_US
Score: 8 Votes (Like | Disagree)
164 months ago
Apple does not support 4K displays @ the moment.
That statement is false.



Score: 8 Votes (Like | Disagree)
slime73 Avatar
164 months ago
Has anyone checked whether 10.9.2 exposes any new OpenGL extensions / functionality?

If you download the OpenGL Extensions Viewer (https://itunes.apple.com/app/opengl-extensions-viewer/id444052073?mt=12) and go to the "OpenGL", "Extensions", or "Report" tabs, you can see a list of what your system supports.

For reference, here is what's displayed in Mac OS 10.9.1 on my system:



Score: 8 Votes (Like | Disagree)
chfilm Avatar
164 months ago
Still, OSX does not support any reasonable scaling modes for those 4k displays!
Score: 5 Votes (Like | Disagree)

Popular Stories

Four iPhone 18 Pro Colors Mock Feature

iPhone 18 Pro: Pre-Orders and Release Date

Thursday August 20, 2026 8:00 am PDT by
Apple has yet to reveal when the iPhone 18 Pro and iPhone Ultra will be announced and released, but the dates usually follow a familiar pattern. As usual, the iPhone event is expected to take place in the first half of September. Labor Day falls on September 7 this year. The last time the holiday was on that day was in 2020, but the iPhone event that year was delayed until October due to...
Foldable iPhone 2023 Feature 1

Gurman: iPhone Ultra Wows Early Testers, Except for Its Camera

Sunday August 23, 2026 11:19 am PDT by
Apple's upcoming foldable iPhone Ultra is winning over the few people who have had hands-on time with the device, though the camera setup may leave some users wanting, according to Bloomberg's Mark Gurman. Writing in his latest Power On newsletter, Gurman says people who have used the device – which is reportedly referred to internally as the iPhone Ultra – like how it fits in your...
macOS 27 next to MacBook Pro Running macOS 27

macOS Golden Gate Marks the End of an Era

Thursday August 20, 2026 2:19 pm PDT by
macOS 27 Golden Gate is not compatible with any Macs with Intel processors, marking the end of an era. The update, which is currently in beta ahead of a release later this year, is limited to Apple silicon Macs with an M1 chip or newer. Last year, Apple said that macOS 26 Tahoe would be the final macOS release compatible with Intel-based Macs, so this was an expected development. Intel...