On Wednesday Apple sent the fourth beta OS X El Capitan 10.11.1 to developers and public testers. Registered developers can download the new build from Mac Updates App Store or via the Developer Center. Testers can find it in Updates App Store or on the public beta portal.
This release took place just a month after the first beta OS X of 10.11.1 and exactly one week after the third beta was released. El Capitan's first major update isn't expected to make any big changes beyond stability, compatibility and security improvements, and of course Unicode 8 support with new emoji.
On September 30th Apple released the OS X El Capitan system, which includes significant internal changes as well as an updated design. A new system font was added, Mission Control was redesigned and a Split View multitasking mode was created, standard applications such as Notes and Mail were updated, and Spotlight search was improved, to which several new features were screwed.