Calling this as the barnyard/domestic pack.
Elaborating: I think Winter 2023 will be either highlands or Latin America, and the one that isn't that will be Summer 2024 (partially wishcasting because I would really prefer an animal pack for Latin America). The "Barnyard Pack" as I'll call it makes sense--domestic animals with petting zoo features are a new thing that can hook casual players as well as probably the most obvious remaining building theme. My preference might be for a "Children's Zoo" pack split between domestic and wild animals, but that labeling might be confusing people who aren't zoo nerds and so I think Frontier would avoid it. As for the roster:
Domestic rabbit (headliner, the one new rig of the pack, and an Easter tie-in)
Domestic cow (Scottish highland would be the best for something more petting zoo-oriented, though my personal preference is the Ankole-Watusi. Outside shot of a zebu)
Domestic goat (African pygmy or adjacent breed)
Domestic donkey or pig (don't want two caprines so no sheep, choice for the pig would be a Kunekune for something a bit more exotic)
Domestic chicken (could get away with this one being a generic chicken)
Five habitat animals and no exhibit animal--my idea would have been some kind of honeybee exhibit but IIRC Frontier said something about not wanting to do that kind of colony-based exhibit (instead focusing on individual animals).