Apple has started rolling out the third beta of macOS Mojave 10.14.6 for testing on the Mac before the update rolls out to the general public in the near future. This comes the same day the first public beta of macOS Catalina became available.
macOS 10.14.6 will likely include mainly bug fixes, security improvements, and other under-the-hood enhancements. Therefore, don’t expect to see any user-facing changes once the software is installed. That being said, if anything significant is discovered, we’ll let you know.
The new build can be installed by heading over to the System Preferences section of the Settings app. From there, hit “Software Update” and you should spot the upgrade ready to be download. Hit download and wait for it to finish installing. You’ll want to plug in your MacBook before installing the update to ensure you don’t run out of juice. Otherwise, sit back and be patient.