I just installed the Mojave 10.14.4 Beta 1, the next version of Mojave. Everything seems OK so far. I am sure there are the usual security fixes in this next version. But, the highlight to me will be a Safari version capable of rendering websites in Dark Mode! That might be pretty cool. Of course, the site has to be coded to show in Dark Mode first. I am really looking forward to playing around with that feature.