The recent beta version released by Apple for developers, macOS High Sierra 10.13.4 beta 2 It does not escape Apple's reviews and in this case the developers have noticed a somewhat strange and unusual build update.
Last Tuesday of this week, the beta 2 of macOS High Sierra 10.13.4 was launched for developers with build 17E150f, this time it seems that Apple has modified some of the beta and automatically update to build 17E150g. It is not like in other versions of the system that a new beta is released in the same week, it is an update of the existing beta.
As they say on the web 9to5Mac, It does not seem that there is a major error or notable failure to launch this beta update, there is nothing in principle that is affecting the correct functioning of the beta and therefore they are surprised of its launch. In any case, the developers do not have to perform strange maneuvers and the update is automatic like all the new beta versions that are arriving for them, so it is not a major problem either.
We will wait Let's see what they show us about this new version released and if they can find the reason why this update has been released. It is not usually a common maneuver when we have beta versions in the hands of the developers and less now that they also usually launch public versions of the betas, but it is true that it has happened on some other occasion that Apple released a build update similar to what happened in this beta without reason, bug or something similar.