Homebrew precompiled binaries for macOS 10.15 Catalina. When they will be available? When will the Homebrew precompiled binaries for macOS 10.15 Catalina be available?
Homebrew waits until Catalina’s official public release.


  as all bottled builds are generated only for supported macOS versions


https://docs.brew.sh/FAQ#why-do-you-compile-everything