As someone pointed out earlier, that is in fact a member of the Platycerium genus, more specifically it looks exactly like Platycerium alcicome (Staghorn Fern) there is actually 17 different species of this plant. These species were once quite rare in zoo collections, and mostly found within Australian botanical collection, that is no longer the case, inf fact I'm looking at one in my backyard right now. They are beautiful plants, and excellent addition to the Planet Zoo collection, the San Diego Zoo has quite a large collection of them as well. The Eucalyptus tree in the background looks beautifully as well, would need a better picture to give a definitive name to this species, but I already have a pretty good idea of the one that it might be, it is however 100% an Eucalyptus species.
Since no one else pointed out this yet, there is also Xanthorrhoea quadrangulata (Australian Grass Tree) in the background of the fern, it is all over that picture's backdrop, young specimens, as I'm sure Frontier will also include the mature variation. I'm truly exited about all of this Oceania/Australian species being added, and I'm guessing the new rocks that will be added, will be the iconic red rocks of Australia, world famous at that. I can't wait for the Australian DLC to be revealed, it is truly exciting, and even though it has not even being mentioned yet, aside from the dead giveaways, it has been the most exciting news of today.