https://arstechnica.com/gadgets/2018/01/apple-releases-macos-high-sierra-10-13-3-and-ios-11-2-5/

Apple updated its entire suite of operating systems today with public releases of macOS High Sierra 10.13.3, iOS 11.2.5, tvOS 11.2.5, and watchOS 4.2.2.

The High Sierra update is relatively minor. It fixes a bug that caused messages in the Messages app to appear out of order, and it fixed a problem with connecting to SMB servers.