Apple has released iOS 11.1 beta 2 and macOS High Sierra 10.13.1 beta 2 for users enrolled in the iOS and macOS beta testing programs. Additionally, the second beta versions of watchOS 4.1 and tvOS 11.1 are available for those in the beta testing programs.
iOS 11.1 beta 2 aims to include various bug fixes and enhancements, and also features hundreds of new emoji icons, including gender neutral characters, dinosaurs, a pretzel, an “I Love You” sign language hand gesture, a wizard, grasshopper, broccoli, a person wearing a headscarf, a bearded person, a nursing mother, zombie, and many others.
macOS High Sierra 10.13.1 beta 2 also aims to focus on bug fixes and various enhancements, and also includes access to the hundreds of new emoji characters.
tvOS 11.1 beta 2 and watchOS 4.1 beta 2 also aim to address bugs and new emoji support.
Users who are enrolled in the respective beta testing programs can find the latest versions available through the software update mechanisms on their devices. In iOS, that is through Settings > General > Software Update, and in macOS that is through the App Store Updates tab.
Apple typically release beta versions to developers first, and soon after unveils the same beta release to those in the public beta testing programs.
The most recently available stable version of iOS is iOS 11.0.2 for iPhone and iPad, and for macOS is the Supplemental Update to macOS High Sierra 10.13 which is a different release from the original High Sierra build but does not change the version number of the Mac system software.