Apple Seeds Build 12D76 of OS X Beta 10.8.3 to Developers - MacRumorsOpen MenuShow RoundupsShow Forums menuVisit ForumsOpen Sidebar
Skip to Content

Apple Seeds Build 12D76 of OS X Beta 10.8.3 to Developers

by

Apple today seeded build 12D76 of OS X Mountain Lion to developers, marking the twelfth beta iteration of the newest version of Mountain Lion. 10.8.3 was first seeded to developers in November of 2012.

10.8.3

Build 12D76 comes less than a week after build 12D74 and features no listed changes. Registered developers can download the update on Apple’s Developer Page.

Update: We've heard that Apple has seeded this version of OS X 10.8.3 to employees, suggesting that it is the final version of the software and is likely to be released to the public in the very near future.

This post originally referred to Build 12D76 as the thirteenth developer seed of OS X 10.8.3 when it was actually the twelfth seed.

Top Rated Comments

MisterKeeks Avatar
172 months ago
The devs at Apple are watching this thread and giggling.
Score: 20 Votes (Like | Disagree)
172 months ago
Leaving aside the pathological desire to update any and all software constantly, I consider thoroughly tested software fundamentally better.

So if Apple really is hammering 10.8.3 this hard to make sure it's clean, I consider that a good thing.

(One could of course argue that they should just let it loose and fix the remaining issues in 10.8.4, but are there any bugs that 10.8.3 is fixing that are so egregious that it needs to come out NOW, thorough testing be damned?)

Does this hold the record for longest run between point iterations of a current-version OSX, though? It's certainly the most betas with no known issues I can remember seeing.
Score: 19 Votes (Like | Disagree)
172 months ago
July, 2022. OSX 15.4.7 released and OSX 10.8.3 beta 78....
Score: 18 Votes (Like | Disagree)
Peace Avatar
172 months ago
Apple changes one line of code...

Pushes new beta
There are over 50 apps that have been updated in this seed.

Not to mention system stuff.
Score: 13 Votes (Like | Disagree)
172 months ago
Is this a joke? Must be...
Score: 12 Votes (Like | Disagree)
HMI Avatar
172 months ago
Change Log:

10.8.2
SafariEngineSnappyMode = 0

10.8.3
SafariEngineSnappyMode = 1
Score: 10 Votes (Like | Disagree)

Popular Stories

iOS 27 on iPhone 17 1

iOS 27 Will Add These New Features to Your iPhone

Saturday May 2, 2026 8:43 am PDT by
Apple is expected to unveil iOS 27 during its WWDC 2026 keynote on June 8, and there are already many rumored features and changes for iPhones. The first developer beta of iOS 27 will likely be available immediately following the keynote, and a public beta typically follows in July. Following beta testing, the software update should be released to all users with a compatible iPhone in...
Apple Event Logo

Apple Just Released a New Accessory

Monday May 4, 2026 8:13 am PDT by
Apple today released a new Pride Edition Sport Loop for the Apple Watch. The band features a rainbow design with 11 colors of woven nylon yarns. The new Pride Edition Sport Loop is available to order now on Apple.com and in the Apple Store app in 40mm, 42mm, and 46mm sizes, and it will be available at Apple Store locations starting later this week. In the U.S., the band costs $49. There...
Apple Announces 2026 Pride Band Watch Face and iPhone Wallpaper Article 2

iOS 26.5 Coming Soon With These New Features

Monday May 4, 2026 8:40 am PDT by
iOS 26.5 is expected to be released next week, following more than a month of beta testing. The update is relatively minor, but there are a couple of new features and changes across the operating system that we have recapped below. iOS 26.5 lays the groundwork for end-to-end encryption for RCS in the Messages app and ads in the Apple Maps app, and it will include a new Pride wallpaper and a...
Related Apple News: Iphone | Sport | Travel | World News | Local News