The Top of the World project is split into four phases. Phases one and two (The Islands & Jungle Trails) are complete. The next two phases are rumored to be Compass Point and a reptile solarium - both of which are under construction currently. I was told by a zoo employee that the main attraction at Compass Point will be manatees.
Interesting. I checked google earth and construction was ongoing as of late last year there. The first two phases were fairly disappointing so I am interested to see what happens with these new phases. I would caution though that manatees are fully dependent on the USFWS and who I doubt would work with a non-AZA institution on this. Yes they may be going back towards AZA membership but manatees even then would require many things to fall in place.