MacOS 10.15.0

macOS 10.15.0 (build 19A583) is the first public release of macOS 10.15 (Catalina) on October 7, 2019 by Apple Inc.
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==Development history==
The first developer beta of macOS 10.15.0 was seeded on June 3 during the 2019 Worldwide Developers Conference.Apple Seeds First Beta of macOS 10.15 Catalina to Developers by Juli Clover, MacRumors. 2019-06-03.
==References==
==External links==
*macOS Catalina 10.15 Release Notes at Apple Developer
**About the security content of macOS Catalina 10.15 at Apple Support
Category:macOS 10.15
Category:2019 introductions