Apple has released the following beta versions:

Apple Seeds Fourth Beta of iOS 12.1.3 to Developers and Public Beta Testers
Apple Seeds Fourth Beta of macOS Mojave 10.14.3 Update to Developers and Public Beta Testers

Apple Seeds Fourth Beta of iOS 12.1.3 to Developers and Public Beta Testers

Apple today seeded the fourth beta of an upcoming iOS 12.1.3 update to developers and public beta testers, a few days after releasing the third beta and three weeks after releasing iOS 12.1.2.

Registered developers can download the new iOS 12.1.3 beta from Apple's Developer Center or over-the-air once the proper configuration profile has been installed from the Developer Center, while public beta testers can get the beta over-the-air.

Read full article @ Mac Rumors

Apple Seeds Fourth Beta of macOS Mojave 10.14.3 Update to Developers and Public Beta Testers

Apple today seeded the fourth beta of an upcoming macOS Mojave 10.14.3 update to developers and public beta testers, a few days after releasing the third beta and more than 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 or the public beta testing site.

Read full article @ Mac Rumors