Hopefully someone with knowledge will eventually reply, but in the meantime I'll point out more optimistic interpretations:
- The last time Stef went very quiet, he working on a major update that included making Renaissance available for the previews. His silence now might be an indication that he is tackling one of the major improvements that he has identified in the past as being desirable.
- The inability to renew beyond the end of the year might simply indicate that no decision on the license has yet been taken. Indeed the matter might not yet even have been discussed.
I've no idea whether it was true, but I did once see a suggestion that one of the major problems that Donald and RGG had with the previous online versions of Dominion was that they received very little financial benefit. Hopefully Shuffle iT's subscription model should have avoided that being the case with this online version, in which case I doubt that Donald and RGG would see any need to pull the plug on Shuffle iT. There are, after all, a lot of people very happy with what has been achieved (I never used either of the previous online versions so I'm not qualified to pass comment on their relative merits), though it must be very frustrating for those people whose primary interest was in an offline version.