Mac OS 10.15 Catalina Support and Known Issues. Please see KBA 134552, as there are many unavoidable issues in this OS release.
Our phase 1 has been completed successfully. 11.5.3 and with it ESH is released to all Central Windows Endpoints. In the past couple of weeks we worked on adding the missing functionality for version 1. It is ready and we currently test it internally. This is how version one will look like:
Our plan is to make version 1 public mid February.
The next two steps will be to include Heartbeat and Central Device Encryption. You should see that coming around end February or beginning March.