Apple today seeded the first beta of an upcoming macOS Catalina 10.15.1 update to developers, just days after releasing macOS Catalina to the public.
The new macOS Catalina beta can be downloaded using the Software Update mechanism in System Preferences after installing the proper software from the Developer Center.
It’s not yet known what improvements the first update to macOS Catalina will bring, but it likely includes performance improvements and fixes for bugs that weren’t able to be addressed in the first version of Catalina.
Read more at MacRumors.com