Preview at WWDC likely in June, followed by September launch.
Apple Releases OS X 10.11 El Capitan With Improved Spotlight Search, Enhanced Performance, and Revamped Apps
OS X El Capitan is still rolling out to users, but it can be downloaded using the Software Update function in the Mac App Store, and it will run on all Macs capable of running OS X Yosemite. Here is a direct link for the update: OS X El Capitan.
As an update complementary to OS X Yosemite, as the OS X El Capitan name suggests, the new operating system builds on the features introduced last year. OS X El Capitan focuses on improving user experience and performance.
OS X El Capitan looks like OS X Yosemite, but it includes a new systemwide font, San Francisco, and it introduces a new Split View option for Mission Control, allowing two full-screen apps to be used side-by-side. El Capitan includes an improved Spotlight Search and several new app features. Safari, for example, has gained Pinned Sites and a universal mute button, while Mail has new iOS-style smart suggestions.
Photos in OS X El Capitan supports third-party photo editing extensions from Mac App Store apps, Notes has new features, and Maps includes Transit directions. Under-the-hood improvements in El Capitan also 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.
More information on OS X El Capitan can be found in our El Capitan roundup, which includes details on major features and some little tweaks that were added throughout the beta testing period. Discussion of El Capitan's new features is also taking place in our OS X El Capitan forum, and we encourage all of our readers to join in with questions and new discoveries.