I am looking at the current map and comparing it to the 2009 map, and noticing quite a few differences, especially down in the South American part of the zoo, which in 2009 had: Tapir, Galapagos Tortoise, Maned Wolf, Mara, Rhea and a camelid (not sure what species), now there are just tortoises and tapir. Overall, comparison of the 2009 and 2013 census shows that mammal species kept at the zoo dropped from 57 to 49.
One thing I really liked about TWPZ was the biogeographic layout, which I thought looked great. In 2009 almost all of the zoo was arranged this way (except the entry exhibits, Asian Elephant) but in the current map this has changed a bit, with a number of African species moving into the South American and adjacent Australian areas. I hope they retain the biogeographic layout, and manage to reinstate the South American section.
@Hix, do you know what happened to the aviary and what species it used to hold? Its been taken off the map, so I doubt its been re-opened.