Let me be more specific: dear digitec.ch, do you sell the D revision?

No, my version, which is several years old, was designed for AM4 and is also used in the ITX build.
The main sticking point for me was the clearance between the cooler and the voltage converters or RAM bars.
The choice of ITX mainboard needs to be carefully considered.
Speaking of which, the current version in the Digitec shop is also only specified for AM4.

No, it is bought before new socket was introduced.