61 New Creatures (one for each biome designed to be more travel oriented) along with one for each era except the era of forests are introduced, I will confirm which ones later, but there are more features to explain.

Jungles, Forests, and Plains will be enhanced

Swamps (not mangrove swamps) will be enhanced, as they are in immense need of revamp.

Deserts are still boring even with archaeology added, maybe an oasis structure or something like a special dungeon for them, I don't know, something that makes them more worthwhile.