
Apple today seeded the first beta of OS X 10.11.1 El Capitan to public beta testers, just days after first releasing the beta to developers and roughly a week and a half before OS X El Capitan will be released to the public on September 30.
The new beta is available through the Software Update mechanism in the Mac App Store.

The first beta of OS X 10.11.1 introduced support for Unicode 8 and new emoji like taco, burrito, cheese wedge, hot dog, middle finger, and unicorn head. The emoji are also included in iOS 9.1, which is also in testing.
Beyond new emoji, there have been no other outward-facing changes discovered, suggesting OS X 10.11.1 is a minor update that will bring bug fixes and performance enhancements. According to Apple's release notes, the beta offers stability, compatibility, and security improvements.
Article Link: Apple Releases First OS X 10.11.1 El Capitan Public Beta