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macrumors bot
Original poster
Apr 12, 2001

Apple today seeded the first beta of an upcoming OS X El Capitan update to developers, two weeks before OS X El Capitan will be released to the public on September 30.

The new beta, build 15B17c, is available through the Software Update mechanism in the Mac App Store and through the Apple Developer Center.


It is not clear what improvements the first update to OS X El Capitan will bring, but it's likely to include bug fixes and performance improvements for issues that have been encountered following the operating system's official release.

Update: OS X 10.11.1 includes support for Unicode 8 and a range of new emoji like taco, burrito, cheese wedge, hot dog, middle finger, and unicorn head. The emoji are also included in iOS 9.1, which is currently in testing as well.

Article Link: Apple Seeds First OS X 10.11.1 El Capitan Beta to Developers


macrumors 601
Jun 12, 2005
Contacts are terrible on GM. Can't even add a contact to a group without relaunching the app 10 times.


macrumors 68040
Oct 13, 2011
probably no other GM candidate. whatever did not get fixed will be included in this version.


macrumors 6502
Jun 3, 2011
San Diego, CA
Just installed it. Definitely some graphical glitches when installing. It's like the installation screen was shoved to the bottom left and I could see the login screen behind it. Then once logging in after the update the screen resolution had to kick back into my previous setting (brand new macbook 13")


macrumors 603
Feb 5, 2009
This being released doesn't mean it's impossible for Apple to release another GM, or for the public release to not incorporate changes from the GM that was released recently.

As an example, iOS 9 public release differed from iOS 9 GM.
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Reactions: milo


Jan 10, 2006
Still have the problem with Thunderbolt display and a cold boot. Both screens will go black with just a cursor recognizing the TB display. Hard shutdown, unplug, restart, wait for boot then plug back in TB for both screens to light up.


macrumors 6502a
Oct 14, 2011
Scranton, PA
Good idea.

End users should only use beta software if they're 100% comfortable with trading stability for a preview of what's coming up.'s a fine line deciding between the two. But at this point I think I'd rather stability. The one exception might be betas for iOS 10. None of this iOS 9.1 and El Capitan nonsense. lol
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