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Apple Releases OS X El Capitan Golden Master to Developers Ahead of September 30 Launch

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Following today's jam-packed media event in San Francisco, Apple has seeded the golden master (GM) version of OS X 10.11 El Capitan to developers. The golden master represents the final version of OS X El Capitan that will be released to the public on Wednesday, September 30.

The update, build number 15A282b, is available through the software update mechanism in the Mac App Store and through the Apple Developer Center.

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It is not clear if the OS X 10.11 GM will add any new outward-facing changes to El Capitan, as many of the prior betas have focused on under-the-hood performance improvements and bug fixes to optimize the operating system ahead of its public release.

During the beta testing period, Apple seeded eight betas of OS X El Capitan to both developers and public beta testers. The final beta, beta 8, was seeded two weeks ago, on August 31.

As an update complementary to OS X Yosemite, OS X El Capitan builds on the features introduced last year. Behind-the-scenes improvements in El Capitan make a number of apps and processes on the Mac faster, and the introduction of Metal makes system-level graphics rendering 40 percent more efficient.


El Capitan introduces a new system-wide font, a revamped Mission Control feature, a split-view feature for using two full-screen apps at once, deeper functionality for Spotlight, and improvements to Safari that include Pinned Sites and a universal mute button.

OS X El Capitan will be released to the public on September 30.

Update: Apple's pulled the OS X 10.11 El Capitan GM, and it's no longer available for download. In the Developer Center, it's listed as "Coming Soon."

Update 2: The El Capitan GM is once again available for download. Apple has also begun sending emails to public beta testers letting them know the GM is now available for beta testers in addition to developers.

Related Forum: OS X El Capitan

Top Rated Comments

realeric Avatar
144 months ago
GM is not the final version but a candidate of the final version. Apple sometimes release GM2...
Score: 2 Votes (Like | Disagree)
Glassed Silver Avatar
144 months ago
Release on September 30? Can't believe that. iOS 9 will be released on September 16, which would mean I can't read the notes taken in iOS 9 from September 16 to September 30 on my mac? That would be.. ugly. So I suspect Apple will release the new OS X together with the new iOS
You'll be surprised to hear that last time around the upgrades released one month apart.

Glassed Silver:mac
Score: 2 Votes (Like | Disagree)
coachingguy Avatar
144 months ago
Can someone tell us whether Aperture still runs okay on El Capitan?

If not, Yosemite will get a good long run.

Glassed Silver:mac
I've been using Aperture just fine in all the El Capitan Beta's...

Coachingguy
Score: 1 Votes (Like | Disagree)
mcrazza Avatar
144 months ago
Installed GM over previous beta on Macbook Pro with success , but then I tried my MacMini with laterst Yosemite and its a total crash , several restarts and kernel panis , which have been reorganised into restart again and so forth . Now im at recovering from Time Machine . So I would suggest to wait !
Right-o, thanks. :)

--------------


I went ahead and made a separate partition to test the GM Candidate (Build a) and it was very stable. No crashes or bugs to speak of. However the Feedback app was still visible, which clearly suggests that Apple is not quite done yet. With that in mind I will hold off until the final GM build is released before I properly upgrade from Yosemite to El Capitan.
Score: 1 Votes (Like | Disagree)
realeric Avatar
144 months ago
Ok. GM1 is another beta version. We are going to get GM2(yes), GM3(maybe). Apple already made 15a282a (for PB), 15a282b (for developer), 15a282c (for apple seed), 15a283 (for insider). It's not possible GM1 becomes the final now.
Score: 1 Votes (Like | Disagree)
Guy Clark Avatar
144 months ago
Running the OS X El Capitan GM now on my mid-2011 iMac.

Performance has never been so good.:)

Snow Yosemite????

OS X El Capitan is undoubtably Yosemite done right:)

The best OS X release since Snow Leopard by a country mile:):):)
Score: 1 Votes (Like | Disagree)

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