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 duo

Apple Announces Foldable 'iPhone Duo'

Wednesday September 9, 2026 10:56 am PDT by
Apple today announced the "iPhone Duo," a new kind of iPhone featuring two screens and a foldable inner display. The two halves of the iPhone Duo connect into a single continuous frame with the same aspect ratio across both displays, and Apple said the transition between open and closed is designed to feel fluid. When fully open, Apple says it is the thinnest iPhone ever made, with an...
Read Full Article • 713 comments
Surprise and Shine Live Coverage Article

Apple Event Live Blog: iPhone Duo, iPhone 18 Pro, and More

Wednesday September 9, 2026 9:10 am PDT by
Apple's "Surprise and Shine" event kicks off today at 10:00 a.m. Pacific Time, where we're expecting to see the foldable iPhone Duo, the iPhone 18 Pro and Pro Max, Apple Watch Series 12 and Ultra 4 models, new AirPods 5 earphones, and perhaps some other announcements. Apple is providing a live video stream on its website, on YouTube, and in the company's TV app across various platforms. We...
Read Full Article • 1304 comments
iOS 27 Feature Dark

Apple Announces iOS 27 Release Date

Wednesday September 9, 2026 10:46 am PDT by
At its event today unveiling the iPhone 18 Pro, AirPods 5, Apple Watch Series 12, and more, Apple announced that iOS 27 will be released later this month. iOS 27 has already been available as a developer beta since June and as a public beta since July, and Apple today said that the update will be released for all users with a compatible iPhone model on Monday, September 14. iOS 27 is...
Read Full Article • 40 comments

Top Rated Comments

L
-LikesMac-
163 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
163 months ago
I love updates, especially once they're stable :D
Score: 8 Votes (Like | Disagree)
M
MikhailT
163 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
163 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
163 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
163 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