Good to hear from another multich enthusiast.. Unfortunately Qobuz hasn't expanded on their initial 5.1 offerings not withstanding a lot of encouragement by many. But I believe the biggest impedance is the now current interest in Atmos encoded files. Amazon and Tidal are now offering some Atmos and looking into the new Sony 3D system as well. Sadly there exist a number of issues with needing proprietary gear to make it work and other BS. We multich guys remain frustrated over the constant format and encoding wars that rear their ugly heads every time multich begins to gain public interest and demand.

But limited amounts of DVD, SACD, and Blu Ray music continues to be released. Get together with the guys over at
https://www.quadraphonicquad.com/forums/
for a start to follow the current action.