Apple has released the following beta versions to the developers:
Apple Seeds First Beta of iOS 12.1.2 to Developers With 'Bug Fixes and Improvements'macOS Mojave 10.14.3 Beta 1 and more
Apple Seeds First Beta of macOS Mojave 10.14.3 Update to Developers
Apple Seeds First Beta of Upcoming tvOS 12.1.2 Update to Developers
Apple Seeds First Beta of watchOS 5.1.3 to Developers With 'Bug Fixes and Improvements'
