I’m not sure , but I may well have been the first to be offered this upgrade path, albeit well before this announcement.
Last year I had a DS which performed admirably for years with Tidal and stored music delivered via Roon, until it didn’t.
After sending the DS over to Mark for inspection and feedback I had a few options, one of which was the trade up to an S30/S60 combo which I took.
I haven’t looked back since.
I have nicer sound than from the DS and faultless playback other than the usual Roon quirks.
I’d encourage anyone thinking about this offer to take it!