First major update to High Sierra since public release.
In an effort to fix a few vulnerability issues with the software, Apple has released an update to macOS High Sierra today (version 10.13.1). This update comes the same day as iOS 11.1 (the emoji update), tvOS 11.1, and watchOS 4.1. High Sierra was first released on September 25 and this is the first major update to the system. The update can be downloaded directly from the Mac App Store.
A fix for the WPA2 WiFi standard vulnerability is included with this update. Prior to the update, KRACK attackers could use an exploit in the WPA2 protocol to decrypt network traffic and sniff out information like passwords. In addition to the WPA2 fix, the update also includes new emoji characters.
For more information on High Sierra, visit apple.com/macos/high-sierra