Today dCS officially announced a hardware Ring DAC update for the Vivaldi DAC and the Rossini.
It seems that the analog output section of the Ring DAC has been newly developed.
There should be an upgrade programme available for current Vivaldi DAC and Rossini owners within a few months.
More details should follow within the next week or so on
https://dcsaudio.com/the-dcs-edit and dcs.community.
Martin