In early 2016 the map will change with two new additions. One is Americas Land, which will feature North American wildlife as well as three carnival style rides: a small roller coaster, a seated zip line (pulls you up and lets go), and a drop tower. This will be in the upper right area of the map, where the words "World" "Aquarium" "Safari Park" on their logo are. The area left of this, where the words "Wildlife" "Zoo" on their logo are is still private property the zoo does not own.
The other addition is an expansion of the recently added Safari Park, the square on the upper left. The new yards, which I saw from the tram tour, are above the current area - in other words off the top edge of the map. What I saw was two large grass yards and I was told the hope is to acquire two female white rhinos to match with their lone male. The male is currently in a dirt paddock on the far top right of the existing area.