This release will now support the Docker image. You can still run it as a service as before.
Lots of changes, but the most notable is that the database is stored an a persistent storage on your host, configured through the docker file. This does mean that any torrents you are currently running will be removed from RDT.
Sonarr and Radarr support have been greatly improved, especially the version 3 releases.
The download/unpack queue process has been rewritten to be more robust.