There is quite a large area behind the bongo/okapi where black rhino etc used to be held. Is this to be extended for them or one would think that might be a suitable area for a new gorilla habitat?
They state that there will be a new location for the gorillas behind the bridge (when you cross the small channel "Landwehrkanal"). Before that they considered the area of elephants for the gorillas (whereas the elephants were supposed to move to the area now designated for the apes) or to change the layout of the monkey building. They just keep changing plans, but the area near the okapis didn't come up yet.
But I guess all I really know is that they will keep redesigning the zoo landscape. My general impression is that they will aim at generous and impressive enclosures for the biggest and most popular species, even if that means less of the smaller ones or repeatet adjustments of plans. At the same time they still try to also maintain a considerably high diversity to represent the whole animal kingdom. It will be quite interesting to see how they are going to go about this.