Apple on Wednesday pushed first betas of what would become the minor iOS 12.1.1, tvOS 12.1.1 and macOS Mojave 10.14.2 updates. The betas are available to Apple's registered developers and members of the Apple Developer Program. Public betas should follow shortly after the developer builds, but you'll need to register with the Apple Beta Software Program.
Apple starts testing first betas of iOS 12.1.1, tvOS 12.1.1 & macOS Mojave 10.14.2 [U]