Cross our fingers and hope... Wolverine is probably the one NA animal I'd truly be upset if they didn't add to the pack... even more so if they went with a freaking trash panda instead...
Realistically in my opinion, it is one of the animals with a smaller chance of getting in.
Beaver, Moose, Sea lion, Cougar are pretty much given.
The alligator is in the top 10 of the meta wishlist and is easy to make, so that one's likely in.
Next I bet on the prairie dog, because it would make use of the meerkat digging mechanics, and Frontier likes using new features for more than one animal.
Which leaves us with one slot, assuming a 7+1 roster, and based on the SEA pack, I'd give it to a complete reskin, like they did with the Malayan tapir. So I'd guess a bighorn sheep, black bear, maybe something else... but I don't think the wolverine is likely unfortunately.