https://wccftech.com/macos-10-15-4-released-with-screen-time-communication-limits-real-time-lyrics-more/

Apple has seen fit to release its latest macOS 10.15.4 update to the public today. The latest public release comes a week after the company released beta 5, the final beta of the firmware and more than a month after the release of macOS 10.15.3. It is now available on supported Macs as a free update, so be sure to upgrade as it brings a lot to the table.

If you're interested in installing it on your compatible Macs, it can be downloaded using the Software Update mechanism in System Preferences. macOS 10.15.4 is a major update as it brings a lot to the table. It includes the Screen Time Communications Limits, something which was first introduced to the iPhone in iOS 13.3 update.