Apple Seeds First OS X Mavericks 10.9.3 Beta to Developers - MacRumors
Skip to Content

Apple Seeds First OS X Mavericks 10.9.3 Beta to Developers

by

Apple today seeded the first test build of OS X 10.9.3 to registered Mac developers, just over a week after releasing OS X 10.9.2. The new beta, which has a build number of 13D12, is available through the Software Update mechanism in the Mac App Store as well as through the Mac Dev Center.

osx1093
Apple is currently asking developers to focus on Graphics Drivers and Audio, and there is no word yet on specific fixes and changes included in the update.

The last Mavericks update, OS X 10.9.2, added FaceTime Audio, the ability to block iMessage users on the Mac, and a fix for a critical SSL vulnerability. 10.9.2 saw a beta testing period of approximately two months, and it is likely 10.9.3 will also see several beta iterations before a public release.

Related Forum: OS X Mavericks

Popular Stories

iPhone 18 Pro Rumored Colors

What's Coming in September: New iPhones, Apple Watches and More

Thursday August 13, 2026 4:20 pm PDT by
Apple will introduce at least five new devices at its iPhone-centric event next month, and it's also possible we'll get devices waiting on Siri AI like the Apple TV. iPhone 18 Pro The iPhone 18 Pro is going to look like the iPhone 17 Pro, but with a smaller Dynamic Island. It's getting some internal updates, including a new Wide camera with a variable aperture for more control over lighting ...
Read Full Article • 25 comments
iPhone 17 One Year Later Thumb 1

Should You Buy an iPhone 17 Now or Wait for iPhone 18?

Friday August 14, 2026 12:15 pm PDT by
For the first time since Apple started selling standard and "Pro" iPhones, we're not going to get an entry-level iPhone model this fall. Apple doesn't plan to release an iPhone 18 in September, and will only launch the iPhone 18 Pro, iPhone 18 Pro Max, and foldable iPhone Ultra. The lower-cost iPhone 18 won't come out until spring 2027. Subscribe to the MacRumors YouTube channel for more ...
Read Full Article • 105 comments
Everything New Your iPhone Can Do on iOS 27 Feature 1

30 New Things Your iPhone Can Do in iOS 27

Friday August 14, 2026 6:24 am PDT by
Apple will release iOS 27 in September, and despite the company's focus this year on refining its flagship operating system and nixing bugs, there are still many additional features on the way, not least of which is Apple's new context-aware Siri, re-tooled for the generative AI era. This year's major iPhone software update isn't all about AI, though, as the following feature list...
Read Full Article • 45 comments

Top Rated Comments

L
-LikesMac-
162 months ago
"Apple Seeds" you know, I never thought about how that can be wordplay. :D

Also, this was snappier than expected.

What's new here?
Score: 12 Votes (Like | Disagree)
L
locoboi187
162 months ago
I love updates, especially once they're stable :D
Score: 8 Votes (Like | Disagree)
M
MikhailT
162 months ago
Mavericks has been the worst upgrade experience for me. Lion was a walk in the park compared to this 10.9 sh**!

I'm on 10.9.2 and I'm fed up with the crazy beach balling, slooow as molasses Finder, audio issues, and wifi issues. Rebooting temporarily fixes the audio and wifi issues.

I've started looking into rolling back to Mountain Lion. OS X 10.9 and iOS 7 needed more time to bake. I'm not impressed with Apple at the moment.



-ITG

What Mac do you have? I have none of the issues and Mavericks is pretty much the best OS X release since Snow Leopard for me.
Score: 7 Votes (Like | Disagree)
B
bbfc
162 months ago
Short lived....

the SSL fix should of be separate of 10.9.2 after they fixed it.... Whats 24 hours ? its a long time to stay vulnerable.

SSL fix one day, 10.9.2 the next..... :eek:

My guess would be 10.9.3 would bring MORE stuff from iOS....

Makes you wanna go back to Mountain Lion doesn't it ?

I think this is more of Apple changing how OS works, gone are the days mobile and desktop features were separate... Now, they are all in one..

I wonder what would have happened if Microsoft started introducing Google/Android features in their OS

This is the biggest pile of crap I've ever read!

10.9.3 will not turn OS X into iOS! Apple have stated they have no intention of merging the two!

And no it doesn't make me want to go back to the mess that was Mountain Lion! Mavericks is far superior.

----------

really? I just am not seeing those kind of issues with my mbp.

Me neither. Mavericks is far superior.
Score: 6 Votes (Like | Disagree)
E
electronics1201
162 months ago
I saw the push notification from MacRumors and my knee jerk reaction was that iOS 7.1 was out. :(

This is still good news though!

On that note, push notifications are amazing.
Score: 5 Votes (Like | Disagree)
P
pk7
162 months ago
I saw the push notification from MacRumors and my knee jerk reaction was that iOS 7.1 was out. :(

This is still good news though!
Score: 5 Votes (Like | Disagree)
Read All Comments