The plans for the project show an enclosure for zebras behind the main savannah, but whether or not this is just a separation enclosure is unknown at this point. The species of zebra to be exhibited in the savannah also has not been confirmed, but I would say that the Grevy's zebras will be moving to the savannah given the work Cincinnati is doing with the species.
What will become of both the current zebra and lion enclosures is, again, unknown at this time. Personally I would like to see the bongos moved to the zebra yard to free up the bongo yard for the okapis, and I would like to see the spectacled bears moved to the lion enclosure; only time will tell what will really become of these enclosures.
The African wild dog enclosure is still up in the air at this point. An enclosure for wild dogs is shown on the plans, but from what I have heard they are no longer so certain that it will end up being built. Again, time will tell.