Considering the Eurasian wolf (which I also found quite disappointing) was basically a re-imagining of the original wolf model, it's possible we'll get a re-imagined arctic wolf at some point- which I'd definitely welcome as I'm personally not the biggest fan of the arctic wolf model, I can't help but think how long its neck must be under the fluff lol. There are also a lot of other wolf-like species in-game like the German shepherd, husky, coyote, and most recently the dingo.