***Download the Combo Updater to 10.15.7 from Apple support weighing in at a hefty 4.82 GB.

Apple doesn’t say much about this update:

macOS Catalina 10.15.7 provides important security updates and bug fixes for your Mac.

• Resolves an issue where macOS would not automatically connect to Wi-Fi networks
• Fixes an issue that could prevent files syncing through iCloud Drive
• Addresses a graphic issue that may occur on iMac (Retina 5K, 27-inch, 2020) with Radeon Pro 5700 XT

I guess the next release will be MacOS 11 (X1) “Big Sur” …

*** I always recommend the Combo Updater when available. The Delta patches seem to be unreliable to leftover previous versions (aka band-aiding). The Combo will replace the OS changes throughout.