Apple Seeds Third OS X 10.11.5 El Capitan Beta to Developers and Public Beta Testers - MacRumors
Skip to Content

Apple Seeds Third OS X 10.11.5 El Capitan Beta to Developers and Public Beta Testers

Apple today seeded the third beta of an upcoming OS X 10.11.5 El Capitan update to developers and public beta testers, one week after releasing the second OS X 10.11.5 beta and a month after releasing OS X 10.11.4, the fourth update to the OS X El Capitan operating system. OS X 10.11.5 has been in testing since April 6.

OS X 10.11.5 beta 3 has a build number of 15F28b and can be downloaded through the software update mechanism in the Mac App Store or through the Apple Developer Center (for developers).

elcapitanmacbook
OS X 10.11.5, like prior OS X El Capitan updates, appears to focus on security enhancements, performance improvements, and bug fixes to address issues that have popped up since the release of OS X 10.11.4. No obvious outward-facing changes were discovered in the first two OS X 10.11.5 betas, but we'll update this post if any new features are found in the third beta.

Related Forum: OS X El Capitan

Popular Stories

iOS 26

iOS 26.5 Features: Everything New in iOS 26.5

Monday May 11, 2026 5:09 pm PDT by
Apple released iOS 26.5 after a few months of beta testing, and while it doesn't have the Siri features we were hoping for since those are being held until iOS 27, there are a handful of useful changes worth knowing about. Subscribe to the MacRumors YouTube channel for more videos. End-to-End Encryption for RCS Support for end-to-end encryption (E2EE) for RCS messages between iPhone and...
Dynamic Island iPhone 18 Pro Feature

11 Reasons to Wait for the iPhone 18 Pro

Monday May 11, 2026 9:01 am PDT by
We're only four months out from the launch of Apple's premium next-generation smartphone lineup, and while we're not expecting a sea change in terms of functionality, there are still several enhancements rumored to be coming to the iPhone 18 Pro and iPhone 18 Pro Max. One thing worth noting is that Apple is reportedly planning a major change to its iPhone release cycle this year, adopting a...
Apple WWDC25 iOS 26 CarPlay Light mode 250609

Six Popular iPhone Apps Now Available on CarPlay

Thursday May 14, 2026 9:10 am PDT by
Apple's CarPlay system for accessing iPhone apps on a vehicle's dashboard screen has received six popular apps in recent weeks: ChatGPT, Perplexity, Grok, Google Meet, WhatsApp, and the indie artist streaming platform Audiomack. Make sure you have the latest version of each app and they will automatically appear on CarPlay. ChatGPT Starting with iOS 26.4, CarPlay supports voice-based...

Top Rated Comments

MLVC Avatar
131 months ago
Anybody know if this fixes the "freezing" issue that a lot of Macs suffer from since the last El Cap update?
Score: 8 Votes (Like | Disagree)
gsmornot Avatar
131 months ago
Beachballs? Did they fix the beachballs? What about the constant freakin beachballs on every one of my Macs running El Capitan, Apple??? So frustrating.
My beachballs are working fine here. :)
Score: 8 Votes (Like | Disagree)
MLVC Avatar
131 months ago
32.1 mb on a 6 plus
You have El Cap on your iPhone? Amazing ;)
Score: 6 Votes (Like | Disagree)
Scary Spice Avatar
131 months ago
Super SMOOOTH™ on all my machines....

Especially the beachball animation. (no more flickering and the pointer INSTANTLY changes to the beachball... not the rude pause of versions past)
Score: 6 Votes (Like | Disagree)
HiRez Avatar
131 months ago
Beachballs? Did they fix the beachballs? What about the constant freakin beachballs on every one of my Macs running El Capitan, Apple??? So frustrating.
Score: 6 Votes (Like | Disagree)
redheeler Avatar
131 months ago
Happy to see this on front page for once. Downloading, 709 MB.
Score: 5 Votes (Like | Disagree)