Two weeks after releasing macOS Catalina 10.15.5 with Mac battery health management features, Apple today pushed the macOS Catalina 10.15.6 Update Beta 2 for developers.
It's version number is 19G46c for developers to test.
After installing the correct configuration file from the Apple Developer Center, you can download the update from the System Download "macOS Catalina" 10.15. 6 Beta system by using the "Software Update" mechanism in the "Preferences" section. 6 Beta systems.
The new update for macOS Catalina does not specify what improvements it brings, but it may include performance improvements, security updates, and bug fixes.