I think a lot changed either last Sooloos update or the one before (they both occurred in quick succession). iirc that Sooloos is now using the superdupa Roon metadata service (either directly on Roon servers or indirectly on Meridian servers) rather than their old Sooloos metadata service. It is possible that the Roon metadata service was based on the Sooloos metadata service however, even if it was, I think it is fair to say that it has been significantly revamped to support the needs of Roon and all reports were that Sooloos is much better for benefiting from this, except for the service outing a few days after launch that persisted over a weekend/holiday.

Meridian owner since 1992
Prime & PSU, Focal Elear headphones, Roon (ROCK 8Gi5 NUC), Explorer 1 & 2, F80. 200/203, various Sonos (via Roon).