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Apple Seeds Sixth OS X 10.11 El Capitan Beta to Developers

Apple today released the sixth beta of OS X 10.11 El Capitan to developers for testing purposes, one week after releasing the fifth El Capitan beta and nearly two months after unveiling the new operating system at its 2015 Worldwide Developers Conference.

The update, which arrives as Build 15A244d, is available through the software update mechanism in the Mac App Store and through the Apple Developer Center.

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While early betas introduced minor design changes and features, the last few betas have focused on under-the-hood performance improvements and bug fixes to optimize OS X El Capitan ahead of its public release.


OS X El Capitan builds on the features introduced with OS X Yosemite, focusing on improving performance and user experience. Behind-the-scenes improvements in El Capitan have made a number of apps and processes on the Mac much faster, and the introduction of Metal makes system-level graphics rendering 40 percent more efficient.

Along with a new systemwide font, El Capitan includes a revamped Mission Control feature, a new Split View feature for using two full-screen apps at once, deeper functionality for Spotlight, and several new features for Safari, including Pinned Sites for housing frequently visited websites and a universal mute button that quiets all tabs.

OS X 10.11 El Capitan is available to both registered developers and public beta testers. After testing is completed, Apple will release El Capitan to the public in the fall.

Related Roundup: OS X El Capitan


Top Rated Comments

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12 months ago
I'm liking this new found focus on OSX lately...
Rating: 20 Votes
12 months ago

Two new El Capitan DPs since the last iOS beta...where's iOS 9 beta 5?


It's about time Apple started putting more focus into OS X.
Rating: 18 Votes
12 months ago
I'm pretty sure that half of my internet consumption in the last month has been downloading OS X updates.
Rating: 17 Votes
12 months ago

Is this new, the iTunes button on the right side?


No, that came out in the 70s.
Rating: 15 Votes
12 months ago

Finder no longer showing sidebar. WTF?

EDIT: Fixed. ****ing Apple changing **** that doesn't need to be changed.

Clearly you're no beta testing material.
Rating: 14 Votes
12 months ago

I hope Safari is fixed. It's been crash prone for several betas now.


You might want to check for third party factors, it hasn't crashed a single time for me on both of my Macs running El Cap.
Rating: 13 Votes
12 months ago
Two new El Capitan DPs since the last iOS beta...where's iOS 9 beta 5?
Rating: 11 Votes
12 months ago
let the whinging begin.
Rating: 10 Votes
12 months ago

update bricked my computer:mad:

ok stop using that brick word. nothing is bricked if you can still do a software restore.
Rating: 9 Votes
12 months ago

Which is why you should read the installation notes, which clearly tell you not to install beta software on primary machines or over the top of current operating systems, so you end up getting what you deserve. You never heard of installing on to a partition or external drive?


No need to be that rude to him man, he even said that he had a Time Machine backup which also failed to restore after El Capitan bricked his machine. It's a reasonable precaution to make and I wouldn't say he got what he deserved - it was bitterly unlucky.
Rating: 7 Votes

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