The betas are moving into a new phase. Apple released the first beta of iOS 12.2, macOS 10.14.4, watchOS 5.2, tvOS 12.2 and Xcode 10.2 for developers this evening.
Only the day before yesterday, the final updates for all four operating systems were released to all users. Now Apple has started a new beta round for developers - the public betas should follow shortly. Some experts expect to find references to upcoming devices such as the entry-level iPad and iPad mini 5 in the new iOS 12.2 beta.
The build numbers of the current versions are:
iOS 12.2 beta 1 (16E5181f)
macOS Mojave 10.14.4 beta 1 (18E174f)
watchOS 5.2 beta 1 (16T5181f)
tvOS 12.2 beta 1 (16L5181f)
Xcode 10.2 beta 1, (10P82s)
iOS 12.2 Beta: All new features at a glance