Apple released macOS Mojave beta 3 a few days ago. The news in this third beta were not significant, but instead they corrected errors and debugged Apple applications, so that everything is perfectly synchronized when we see the final version in September.
We always warn you that betas are used for developers to do the appropriate tests and an example of this is the fixed version of macOS Mojave beta 3. In this case Apple releases this modified version to correct the operation of a specific application, but it can ruin part of our day-to-day work.
In this case, Apple fixes a problem with the FeedBack app, which allows you to obtain information on the performance of the operating system. Therefore, if you have beta 3 and the system asks you to update for the same beta, you should not worry as it is an updated version. So far we have not found any difference added to the improvements in Feedback. The new application number assigned is 18A326h, while the old version was 18A326g.
Globally macOS Mojave performance is surprising for its maturity, when we only have 3 betas. The performance of the operating system at times does not suggest that we are facing a beta. Even so, many points remain to be polished. One of the most relevant is the font library on Mac with non-retina display. Today a high percentage of Macs are MacBook Air, which do not have a retina display, and in these a problem of adaptation of the sources is clearly noted. Obviously, it is a beta and this aspect must be present in Apple's work plan.
Lastly, We do not stop recommending the installation of the beta macOS Mojave on an external drive, such as a hard disk or a USB memory, apart from the main unit, to avoid alternations in our main work system.