MacRumors published a story that Apple has released the fourth beta of macOS Catalina 10.15.5 to registered developers.
Apple Seeds Fourth Beta of Upcoming macOS Catalina 10.15.5 Update to Developers
Apple today seeded the fourth beta of an upcoming macOS Catalina 10.15.5 update to developers for testing purposes, one week after seeding the third beta...
Apple Seeds Fourth Beta of Upcoming macOS Catalina 10.15.5 Update to Developers