Apple Seeds Build 12D65 of OS X Beta 10.8.3 to Developers - MacRumors
Skip to Content

Apple Seeds Build 12D65 of OS X Beta 10.8.3 to Developers

by

12d61Apple today seeded build 12D65 of OS X Mountain Lion 10.8.3 to developers, marking the ninth beta iteration of the newest version of Mountain Lion. 10.8.3 was first seeded to developers in November 2012.

Build 12D65 comes exactly one week after build 12D61. As with build 12D61, build 12D65 continues to ask developers to focus on AirPlay, AirPort, Game Center, Graphics Drivers, and Safari.

Registered developers can download the update on Apple's Developer Page.

Update: According to 9to5Mac, the new build fixes the file bug that recently made headlines.

This post originally referred to Build 12D65 as the tenth developer seed of OS X 10.8.3 when it was actually the ninth seed.

Top Rated Comments

A
anzio
173 months ago
This will be very well tested.
Score: 13 Votes (Like | Disagree)
Z
zin
173 months ago
I've managed to do some undercover work and have the change log. You can view it below:


* Fixes some bugs nobody suffers from
* Doesn't add anything new
* Claims to improve stability and performance
Score: 12 Votes (Like | Disagree)
Sky Blue Avatar
Sky Blue
173 months ago
The never ending beta.
Score: 8 Votes (Like | Disagree)
Peace Avatar
Peace
173 months ago
Shutdown times appeared faster a few builds back, but seem slow once again. Although, they don't appear to be as slow as 10.8.2.

I'm seeing a few new bugs I haven't seen in previous builds.
I had duplicate cursers on my screen a moment ago.
Every time I log out, the desktop picture freezes in the middle of fading to the fabric background of the Login Window. Very jarring.

File a bug report.
Score: 5 Votes (Like | Disagree)
T
thatsfinebut
173 months ago
I hope that after they release 10.8.3, they release an update to Bootcamp so I can install Windows 8 (with full support).
Score: 5 Votes (Like | Disagree)
T
thomaskc
173 months ago
Are these mentioned only in the installer? there is a screenshot of these 2 features?

I took a screenshot of the installer:

Score: 4 Votes (Like | Disagree)
Read All Comments

Popular Stories

Apple Card iPhone 16 Pro Feature

Apple Card Promo to Offer Free AirPods Pro 3

Friday May 15, 2026 8:59 am PDT by
Starting as early as next week, customers who sign up for an Apple Card at Apple's retail stores in the U.S. will receive $249 cash back when they purchase AirPods Pro 3, according to Bloomberg's Mark Gurman. The promotion has yet to be officially announced by Apple, so exact terms and conditions are not available at this time. AirPods Pro 3 are priced at $249 in the U.S., so customers who...
Read Full Article • 55 comments
airpods pro 3 pink

New Apple Card Holders Can Get Free AirPods Pro 3, But There's a Catch

Monday May 18, 2026 8:11 am PDT by
Apple today launched a new promotion offering new Apple Card holders the chance to earn back the cost of AirPods Pro 3 through monthly cash rebates, but there is a recurring spend requirement attached. Customers who open a new Apple Card account and purchase AirPods Pro 3 directly from Apple by June 15 will qualify. Starting July 1 and running through April 30, 2027, cardholders can earn $25 ...
Read Full Article • 82 comments
Foldable iPhone 2023 Feature 1

Foldable iPhone Production Stalls Amid Hinge Issues

Monday May 18, 2026 7:29 am PDT by
Trial production of Apple's long-anticipated foldable iPhone, likely called the "iPhone Ultra," has run into a significant engineering hurdle centered on hinge reliability, according to a known leaker. The leaker known as "Instant Digital" posted on Weibo that the foldable device's hinge is consistently failing to meet Apple's quality control standards under conditions of prolonged,...
Read Full Article • 119 comments