That would be lovely. However I'm well outside the C.I. loop now, with my non-upgraded D120!
Just checked with devialet support and they confirmed that the core infinity board ist technically able to support it but the software is not there yet.
So, johnny, you still have plenty time for a pro upgrade
I decided to play with serial on the Devialet today, and have been able to type commands manually into a terminal to change volume, inputs, etc.
It sure is frustrating that five years since the last post on this topic, Devialet hasn't implemented a REST API interface to control the amp. I've submitted a support ticket to request this, but I won't hold my breath.