The extension offered by Apple developers to unlock MacOS Catalina won't last long. The company sent a message to the macOS installation community, informing them of that The granting of such applications will be enforced from February 3, 2020.
Notarization, for those who don't remember, contains a verification process where Apple verifies that the downloaded app on the network is free of fraud or content malware
In addition safety has its price
Apple wanted it to be the case after launching MacOS Catalina, but it ended up giving developers more time to expand the system's security in the face of the growing threat. It doesn't have to go through this process when the app is distributed through the Mac App Store
However, if you happen to have a macOS application and distribute it outside of the Mac App store, remember: you must have a developer ID and get a signature that Apple gives you the ability to write that request and be able to continue using it on Mac In about 40 days we will mark the change