Apple today seeded the third beta of an upcoming macOS Mojave 10.14.2 update to developers, one week after seeding the second beta and two weeks after releasing the macOS Mojave 10.14.1 update.
The new macOS High Sierra 10.14.2 beta can be downloaded through the Software Update mechanism in System Preferences after the proper profile has been installed from Apple's Developer Center.

We don't yet know what improvements the second update to macOS Mojave will bring, but it is likely to include bug fixes and performance improvements for issues that weren't able to be addressed in the macOS 10.14.1 update.
No new features were discovered in the first two 10.14.2 betas, but we'll update this post if anything new is found in the third beta.
macOS Mojave 10.14.2 comes shortly after the release of macOS 10.14.1, an update that brought support for Group FaceTime on the Mac and introduced new emoji characters.
Update: Apple has made a new public beta of macOS 10.14.2 available to its public beta testers.






















Top Rated Comments
any chance you will introduce some new Siri languages? It’s been a while since you added any to the list.
I have Mojave installed on a Mac Mini 2014 base model. Finder often gets out of sync with what is on the file system showing files that have been deleted or not changing the filename.dowload to the filename and misbehaving when you move something to the trash. . I have tried multiple things like restarting Finder but Finder will never restart. The ONLY fix is a reboot. Things after a reboot work pretty well for a while but sooner or later Finder gets out of touch with the filesystem again.
One thing of note is that on Mojave with an SSD, there’s only APFS as a format choice. I’m suspecting that APFS has a lot of overhead and doesn’t work well on the lower end machines like the Mac Mini. However, there’s no other choice for formatting. I guess one could load up El Capitan or Sierra and format and then install Mojave.
So far, I’ve chose to wait for the 10.14.2 release to see if there’s any fixes in there for the Finder bug.