mavericks_round_iconApple today seeded build 13D21 of OS X 10.9.3 to developers, one week after releasing the second OS X 10.9.3 beta, build 13D17 and two weeks after the first 10.9.3 beta. The beta is available through the Software Update mechanism in the Mac App Store as well as through the Mac Dev Center.

Apple is currently asking developers to focus on Graphics Drivers and Audio. As was discovered with the first beta, 10.9.3 adds new support for 4K displays, offering "Retina" resolutions that improve readability along with support for 60Hz output from the Retina MacBook Pro.

Apple has also released the new 11.1.6 iTunes beta to developers, which was initially seeded to Apple employees earlier this week. The beta restores the ability to locally sync contacts and calendars, a feature that was removed with the launch of Mavericks.

Top Rated Comments

Nunyabinez Avatar
135 months ago
I like seeing them working on graphics performance. Maybe someday I'll be able to get similar performance in games that have Mac versions to the performance of Windows versions.
Score: 6 Votes (Like | Disagree)
hfletcher Avatar
135 months ago
One of the possible reasons for slower GPU performance compared with Windows might be the old driver versions Apple uses: i.e. 10.9.2 still on 310.40 which was released by Nvidia 1 year ago!

In 1 year a lot of fixes/optimisation will have happened by Nvidia to their drivers (windows users are currently on 335.23..)
Score: 2 Votes (Like | Disagree)
leman Avatar
135 months ago
Nice! Do you think you could check if 10.9.3 supports any new OpenGL functionality compared to 10.9.2? (I made a post about how to do that here: https://forums.macrumors.com/showpost.php?p=18713234&postcount=9)

It doesn't. The GPU performance has increased around 10% for me though...
Score: 2 Votes (Like | Disagree)
dysamoria Avatar
135 months ago
Any fixes for the random networking failures?

How about "fixes" for the waste of system resources with all the new system services and processes added in Mavericks and the networking activity by the "gamed" process?? If I'm not running Game Center or playing Game Center apps, why the frack is the gamed process running and communicating on the Internet?
Score: 1 Votes (Like | Disagree)
robertosh Avatar
135 months ago
I hope they fix audio performance with usb audio cards, it's a pain with Mavericks. :(
Score: 1 Votes (Like | Disagree)
Watabou Avatar
135 months ago
Which extensions are they? Here's what I have in 10.9.2: http://i.imgur.com/LvIumpg.png
See attached image. Seems to be the gpu_shader_fp64 and the vertex_attrib_64bit.
Score: 1 Votes (Like | Disagree)

Popular Stories

iPhone 16 Pro Sizes Feature

iPhone 16 Series Is Just Two Months Away: Everything We Know

Monday July 15, 2024 4:44 am PDT by
Apple typically releases its new iPhone series around mid-September, which means we are about two months out from the launch of the iPhone 16. Like the iPhone 15 series, this year's lineup is expected to stick with four models – iPhone 16, iPhone 16 Plus, iPhone 16 Pro, and iPhone 16 Pro Max – although there are plenty of design differences and new features to take into account. To bring ...
Apple Watch Series 9

2024 Apple Watch Lineup: Key Changes We're Expecting

Tuesday July 16, 2024 7:59 am PDT by
Apple is seemingly planning a rework of the Apple Watch lineup for 2024, according to a range of reports from over the past year. Here's everything we know so far. Apple is expected to continue to offer three different Apple Watch models in five casing sizes, but the various display sizes will allegedly grow by up to 12% and the casings will get taller. Based on all of the latest rumors,...
iPhone 16 Pro Left Side Feature

iPhone 16 Pro Again Rumored to Come in New 'Rose' Color

Tuesday July 16, 2024 3:53 am PDT by
Apple's upcoming iPhone 16 Pro and iPhone 16 Pro Max will be available in a new "Rose" color, claims a rumor out of China, corroborating previous claims. Chinese Weibo-based leaker OvO Baby Sauce OvO, a relatively new source of supply chain leaks, said on Tuesday that the new color code for the iPhone 16 Pro models is simply "Rose," not the previous "Rose Gold" color that Apple first offered ...
New MacBook Pros Launching Tomorrow With These 4 New Features 2

M5 MacBook Models to Use New Compact Camera Module in 2025

Wednesday July 17, 2024 2:58 am PDT by
Apple in 2025 will take on a new compact camera module (CCM) supplier for future MacBook models powered by its next-generation M5 chip, according to Apple analyst Ming-Chi Kuo. Writing in his latest investor note on unny-opticals-2025-business-momentum-to-benefit-509819818c2a">Medium, Kuo said Apple will turn to Sunny Optical for the CCM in its M5 MacBooks. The Chinese optical lens company...
tinypod apple watch

TinyPod Turns Your Apple Watch Into an iPod

Wednesday July 17, 2024 3:18 pm PDT by
If you have an old Apple Watch and you're not sure what to do with it, a new product called TinyPod might be the answer. Priced at $79, the TinyPod is a silicone case with a built-in scroll wheel that houses the Apple Watch chassis. When an Apple Watch is placed inside the TinyPod, the click wheel on the case is able to be used to scroll through the Apple Watch interface. The feature works...
macbook pro january

Best Buy's Black Friday in July Sale Takes Up to $700 Off M3 MacBook Pro for Members

Monday July 15, 2024 11:05 am PDT by
Best Buy's "Black Friday in July" sale is in full swing today, and in addition to a few iPad Air discounts we shared earlier, there are also some steep markdowns on the M3 MacBook Pro. You will need a My Best Buy Plus or Total membership in order to get some of these deals. Note: MacRumors is an affiliate partner with Best Buy. When you click a link and make a purchase, we may receive a small...