Apple Seeds First OS X Mavericks 10.9.3 Beta to Developers

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

apple store down feature

Here's Why the Apple Store is Going Down

Thursday November 27, 2025 1:01 pm PST by
Apple's online store is going down for a few hours on a rolling country-by-country basis right now, but do not get your hopes up for new products. Apple takes its online store down for a few hours ahead of Black Friday every year to tease/prepare for its annual gift card offer with the purchase of select products. The store already went down and came back online in Australia and New Zealand, ...
Apple Foldable Thumb

Foldable iPhone to Debut These Three Breakthrough Features

Tuesday November 25, 2025 7:09 am PST by
Apple's first foldable iPhone is expected to launch alongside the iPhone 18 Pro models in fall 2026, and it's shaping up to include three standout features that could set it apart from the competition. The book-style foldable will reportedly feature an industry-first 24-megapixel under-display camera built into the inner display, according to a recent JP Morgan equity research report. That...
iPhone Pocket Short

iPhone Pocket is Now Completely Sold Out Worldwide

Tuesday November 25, 2025 7:16 am PST by
Apple recently teamed up with Japanese fashion brand ISSEY MIYAKE to create the iPhone Pocket, a limited-edition knitted accessory designed to carry an iPhone. However, it is now completely sold out in all countries where it was released. iPhone Pocket became available to order on Apple's online store starting Friday, November 14, in the United States, France, China, Italy, Japan, Singapore, ...
streaming black friday 2025

Black Friday Streaming Deals Include Big Savings on Disney+, Hulu, Apple TV, and More

Monday November 24, 2025 8:03 am PST by
We've been focusing on deals on physical products over the past few weeks, but Black Friday is also a great time of year to purchase a streaming membership. Some of the biggest services have great discounts for new and select returning members this week, including Disney+, Hulu, Paramount+, Peacock, and more. Note: MacRumors is an affiliate partner with some of these vendors. When you click a...
streaming black friday 2025

Best Black Friday Streaming Deals - Save Big on Apple TV, Disney+, Hulu, and More

Thursday November 27, 2025 1:14 pm PST by
We've been focusing on deals on physical products over the past few weeks, but Black Friday is also a great time of year to purchase a streaming membership. Some of the biggest services have great discounts for new and select returning members this week, including Apple TV, Disney+, Hulu, Paramount+, Peacock, and more. Note: MacRumors is an affiliate partner with some of these vendors. When...
General Apps Messages Redux

Singapore Orders Changes to iMessage by December

Tuesday November 25, 2025 6:39 am PST by
Singapore has ordered Apple to block or filter messages on iMessage that impersonate government agencies, requiring the company to implement new anti-spoofing protections by December as part of efforts to curb rising online scams, the Straits Times reports. Singapore's Ministry of Home Affairs (MHA) said that it had issued an Implementation Directive to Apple under the Online Criminal Harms...
General Black Friday Deals 25 Red Green

The 30+ Best Black Friday Apple Deals on AirPods, iPads, MacBooks, and More

Thursday November 27, 2025 6:46 am PST by
Black Friday is in full swing, and as always this is the best time of the year to shop for great deals, including popular Apple products like AirPods, iPad, Apple Watch, and more. In this article, the majority of the discounts will be found on Amazon. Note: MacRumors is an affiliate partner with some of these vendors. When you click a link and make a purchase, we may receive a small payment,...
iphone air camera

iPhone Air Flop Sparks Industry Retreat From Ultra-Thin Phones

Thursday November 27, 2025 3:14 am PST by
Apple's disappointing iPhone Air sales are causing major Chinese mobile vendors to scrap or freeze their own ultra-thin phone projects, according to reports coming out of Asia. Since the ‌iPhone Air‌ launched in September, there have been reports of poor sales and manufacturing cuts, while Apple's supply chain has scaled back shipments and production. Apple supplier Foxconn has...

Top Rated Comments

-LikesMac- Avatar
153 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)
locoboi187 Avatar
153 months ago
I love updates, especially once they're stable :D
Score: 8 Votes (Like | Disagree)
MikhailT Avatar
153 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)
bbfc Avatar
153 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)
electronics1201 Avatar
153 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)
pk7 Avatar
153 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)