After initial release of macOS 10.15 Catalina, on 15 Oct 2019 Apple released Supplemental Update. The latest version of macOS now have build number 19A602.
Direct download link is not yet available.
If you’re using macOS Mojave or later get the update via System Preferences > Software Update or alternatively Get macOS Catalina from the Mac App Store.
The macOS Catalina Supplemental Update includes installation and reliability improvements, and is recommended for all users.
- Improves installation reliability of macOS Catalina on Macs with low disk space
- Fixes an issue that prevented Setup Assistant from completing during some installations
- Resolves an issue that prevents accepting iCloud Terms and Conditions when multiple iCloud accounts are logged in
- Improves the reliability of saving Game Center data when playing Apple Arcade games offline
For detailed information about the security content of this update, please visit: https://support.apple.com/kb/HT201222