This polycule of Kindra, June, and Artemis is essentially what I'm hoping for as well, though I agree it's unlikely.
That said, there really hasn't been much said about a throuple other than there probably is one (and even what's been said is very vague), and certainly not much recently, unless I've missed it. If I remember right, early on it was stated that Artemis likely wouldn't be a LI in this game/season/whatever also, but she started getting love points this last update. So things
might have changed, and it's possible that the potential relationship outcomes may have changed as well but no new info given about it.
Again, I realize that's unlikely. But I'm hoping to be pleasantly surprised.
Edit: I will say though that Artemis could potentially be more open than just about anyone to non-traditional relationships if MC and Kindra also are, since they've been her main source of formative info about them. She hasn't really had experience with societal pressures towards monogamy either (at least not yet). So if digi.B has decided that Artemis could be a poly love interest, it'd be entirely believable to me.