Well what I hope for is regular animal pack with heavy focus solely on South America with promise of few more packs to come.
What is more toned down expectation is worldwide animal pack with perhaps some of the """leaked""" species (Tree Kangaroo, Baboon, Python...) that have been wanted for quite some time.
But I don't like to not hype myself up and I don't mind being disappointed, so I'm shooting for expanded 8+5 Farewell Animal Pack (with name like Planet Earth or something, because Planet Zoo/Planet Coaster) loaded with likes of Sea Otter, Echidna, Spider Monkey, Pelican...