I know for a fact there are at least 2 versions without a version number update. The USB bi-directional functionality was not working, after some troubleshooting they came back with a new firmware, but with the same version.
Devialet 200 <> Bowers & Wilkins 805 Diamond <> Aurender N100 <> Clearaudio Concept MC <> Audioquest Rocket 44/Coffee USB
The Netherlands