Apple Seeds OS X Mavericks 10.9.5 Build 13F12 to Developers - MacRumors
Skip to Content

Apple Seeds OS X Mavericks 10.9.5 Build 13F12 to Developers

by

Apple today seeded Mavericks 10.9.5 build 13F12 to developers, just over a week after seeding the first OS X 10.9.5 beta, build 13F7, and more than a month after releasing OS X 10.9.4 to the public.

10_9_5_13f12
The beta is available through the Software Update mechanism in the Mac App Store and through the Mac Developer Center.

It is unclear what improvements the 10.9.5 update will bring to Mavericks, but it is likely to include bug fixes and stability enhancements. Apple is asking developers to focus on USB, USB Smart Cards, Graphics, Safari, and Thunderbolt.

Along with working on improvements to Mavericks, Apple is also beta testing OS X Yosemite, which is due to be released in the fall. The last Mavericks update, 10.9.4, added several Wi-Fi fixes and improved wake from sleep reliability.

Related Forum: OS X Mavericks

Top Rated Comments

R
Rukuru
158 months ago
Looking forward for Mavericks 10.9.5, I am not going to 10.10 at least for 6 months, maybe more. A lot of Pro Apps like avid media composer, pro tools, Autodesk Maya among others works always better with an OS that is not brand new.
Score: 2 Votes (Like | Disagree)
CrazyForApple Avatar
CrazyForApple
158 months ago
The last of Mavericks
Score: 2 Votes (Like | Disagree)
P
pedromcm.pm
158 months ago
Will it be the last 10.9.x?

Looks like I will stay in that version at least until the end of december. My MBAir runs so well...
Score: 1 Votes (Like | Disagree)
Read All Comments

Popular Stories

iPhone Handoff iOS 27 Feature

T-Mobile to Charge $5 a Month for iOS 27 iPhone Handoff

Thursday September 10, 2026 3:58 pm PDT by
T-Mobile will charge customers $5 per month to use iPhone Handoff, an e-SIM feature that allows the same phone number to be used on two separate iPhones. iPhone Handoff requires carrier support, and at launch, only T-Mobile users in the U.S. and Deutsche Telekom users in Germany will be able to use it. T-Mobile says customers can use their number across two compatible iPhone models and...
Read Full Article • 152 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
iphone duo

IMAX Reacts to iPhone Duo's 1:1.4 Aspect Ratio Displays

Friday September 11, 2026 4:42 am PDT by
Production theater company IMAX has responded in a mixed way to Apple's embrace of a 1:1.4 aspect ratio on the iPhone Duo's inner and outer displays. The boxier ratio happens to be very close to the classic "full-frame" IMAX 1.43:1 aspect ratio, which comes from the geometry of the company's original 15-perforation/70mm film system. In response to an X post from someone wondering if we'll see...
Read Full Article • 74 comments