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

162 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
162 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
162 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)
162 months ago
Apple does not support 4K displays @ the moment.
That statement is false.



Score: 8 Votes (Like | Disagree)
slime73 Avatar
162 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
162 months ago
Still, OSX does not support any reasonable scaling modes for those 4k displays!
Score: 5 Votes (Like | Disagree)

Popular Stories

apple price hike

Apple Just Increased Prices on MacBooks, iPads, and More

Thursday June 25, 2026 5:44 am PDT by
Apple today dramatically increased device prices across multiple product lines. Subscribe to the MacRumors YouTube channel for more videos. After temporarily taking it down earlier today, Apple's online store is back up with a series of product price increases. The changes are as follows: HomePod mini: $129, up from $99 (+$30) HomePod: $349, up from $299 (+$50) Apple TV: $199, up from...
iphone 17 ceramic shield

2027 iPhone 18 and iPhone 18e to Get 9GB RAM and A20 Chip

Friday June 26, 2026 9:57 am PDT by
The lower-end iPhone 18 models set to launch in spring 2027 will feature 9GB DRAM, up from 8GB, according to Apple analyst Ming-Chi Kuo. Kuo says the A20 chip Apple plans to use for the devices will have 1.5GB x 6 dies for a total of 9GB RAM, instead of 2GB x 4 dies as the current lower-end iPhone 17 models use. By lower-end iPhones, Kuo is likely referencing the iPhone 18 and the iPhone...
Mac Studio Feature

M5 Ultra Mac Studio Could Launch in 2026 With Up to 768GB of RAM

Thursday June 25, 2026 2:30 pm PDT by
Despite price increases across the Mac line, Apple is still planning to release a new Mac Studio as soon as this year, reports Bloomberg. Apple plans to introduce a new M5 Ultra chip as the final option in the M5 family before it transitions to the M6, M7, M7 Pro, and M7 Max. The M5 Ultra will come in a new version of the Mac Studio, which hasn't been updated since March 2025. The Mac...