Now, less than a week later, it appears that Apple has released a slightly revised version of that supplemental update for macOS Catalina 10.15. It appears that the new software is primarily meant for folks who did not update their Macs with the first supplemental update, as the new software boasts the exact same changelog as the first.
That being said, the new, revised macOS Catalina 10.15 supplemental update fixes various issues, including improving overall installation reliability for macOS Catalina on Macs with low disk space. It also fixes an issue that could cause reliability issues with saving Game Center data for Apple Arcade games.
Here’s the full changelog:
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
To update, open the System Preferences app on your Mac and navigate to Software Update. Selecting that will guide you through the process. The revised supplemental update is free to download and install.
Looking ahead, Apple is still working towards the public release of macOS Catalina 10.15.1, which the company is currently beta testing.