I am running Catalina 10.15.6 with Xcode 11 and Command Line Tools installed via
xcode-select --install
But there is always a prompt in System Preferences, telling me there is an update for CLT with version: Command Line Tools beta 3 for Xcode 12.0. It should not be here because my macOS and Xcode are stable version, not BETA.
Hope Apple will fix that soon. It's so annoying.