If there is no official report, why not install Catalina on VMWare or VirtualBox before the upgrade, to confirm CafeTran Espresso can run on it?
In Catalina, the same as Mojave, when an application fails to launch because it is from an unidentified developer - it hasn’t been notarized by Apple, it will appear in System Preferences > Security & Privacy, under the General tab. Click Open Anyway to confirm your wish to open or install the app.
I am going to confirm it and make all the checks with CafeTran on Catalina soon.
So I have checked CafeTran's installation and running it on Mac's new Catalina OS. The only difference I have noticed so far is when you run the program first time, you need to launch it from Applications via the right-click (and choose Open) to let Mac's GateKeeper accept it.
Thanks, I'll report this back to the Facebook group Mac translators. Much appreciated!
Here it is:
Yesterday I upgraded my MacBook Pro to macOS Catalina. The already installed CafeTran Espresso 10 could be opened without a problem. I ran some tests, and all seems to work well.
On a side note: some of the 32-bit apps, reported not to run on Catalina, actually still run.
After upgrading to macOS Catalina, the issue might be occurring because of viruses in your system.
So to installed the CafeTran Espresso 10 on mac, an easy way to fix it run a full system scan.
Or try this method here to fix such type of issues.