There's only been two exceptions to the standard key art format that features three species of animals. The first scenery pack (Arctic; included 1 non-DLC species in the bison) and the first animal pack (SEA; featured only 1 species).And what's all this talk about a 3rd elephant? We're not getting one, they just shoved an elephant on the cover because elephants are iconic to Asia, particularly India, and we already have the Indian elephant in-game. There's no way we're getting a 3rd, random elephant subspecies.
We'd more likely get a 2nd zebra or giraffe over an elephant
But other than that every single key art format has been the same. One species put front-and-center with two others somewhere in the background. In the case of animal species two are always silhouetted. So I'm just not sure why here, they'd go with an in-game elephant for the vibes instead of having it be another species...
Obviously, never say never, but it's far more likely that we're getting a third elephant than not TBH.