You can test what applications will or won't work in macOS 10.15 right now using macOS 10.13.4/5/6 or 10.14.x:
To put your Mac back to 32/64-bit mode change step 3 to nvram boot-args=""
- Restart your Mac and hold down Command-R to boot into Recovery Mode
- Launch Terminal
- Enter this command: nvram boot-args="-no32exec"
- Restart your Mac
- Test your applications
This is great - Allows me to test some stuff before installing the beta....
Thank you for this!