Apple today seeded the third beta of an upcoming macOS Mojave 10.14.3 update to developers, three weeks after releasing the second beta and a month after the launch of macOS Mojave 10.14.2.
The new macOS Mojave 10.14.3 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 next 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 10.14.2 update.
Read more at MacRumors.com