Today, Apple released iOS 11.2.5, macOS 10.13.3 High Sierra, watchOS 4.2.2, and tvOS 11.2.5, versions that have been in beta since December 13. As the version numbers indicate, there are no new front-facing features, but there are a bunch of fixes and improvements.
iOS 11.2.5 build 15D60 is the same as beta 7, so if you"re on the beta program, you won"t see an update today. It includes fixes related to Audio, Core Bluetooth, Kernel, LinkPresentation, QuartzCore, Security, and WebKit.
macOS 10.13.3 High Sierra comes in two different builds, presumably depending on your Mac: 17D47 and 17D2047. These includes fixes for Audio, curl, IOHIDFamily, Kernel, LinkPresentation, QuartzCore, Sandbox, Security, and WebKit. However, there are also updates for El Capitan and Sierra with subsets of these fixes.
watchOS 4.2.2 build 15S542 includes fixes for Audio, Core Bluetooth, Kernel, LinkPresentation, QuartzCore, Security, and WebKit. And finally, tvOS 11.2.5 build 15K552 includes fixes for Audio, Core Bluetooth, Kernel, QuartzCore, Security, and WebKit.
Obviously, there"s a lot of overlap between these updates, which isn"t surprising. All of these updates are available now.