After the updates for Apple Watch in the form of watchOS 2 Beta 2 and iOS 9 Beta 2 for iPhone, iPad and iPod touch, even the Mac gets a new preview of OS X 10.11 El Capitan makeover.
About the App Store, the update can be downloaded to the second developer preview of OS X 10.11 El Capitan. At the same time a new Apple Recovery Update for El Capitan available.
Among the innovations of El Cap include a new split-screen mode, a revised note-taking app, and a lot of improvements that will contribute to the stabilization of the system.
A public beta version of OS X 10.11 is not yet available, but is expected in July.