After spending more than a month in testing, Apple on Tuesday released the third major software update to OS X 10.11 El Capitan, its latest and greatest desktop operating system that was released for public consumption in October 2015.
Available through the Mac App Store's Updates tab, OS X 10.11.3 El Capitan update is now available for download on any Mac running a prior El Capitan version and is primarily a bug-fix release.
The new software is being deployed throughout Mac App Stores around the world so wait a little if you don't see it yet as these things take time to propagate.