I went to the Member Preview as well
Sadly my camera was having issues the whole day with the brightness and the fact that the lenses were too long for me to take any photos of the exhibits. Plus as what FSBlue said, only one Tiger exhibit and the Wreathed Hornbill exhibit was ready for display today.
Despite that I was very impress with the area as a whole. I will go to the zoo again Sunday and try my best to take pictures of the area past the hordes of people that will be there.
One thing to note is that the trail system goes in a full loop around the whole complex. A keeper informed me that while the two exhibits are occupied, another tiger will have access to the entire trail system once the tigers are fully acclimated with their new homes. So if the tiger wants to relax in the "fig tree", then it can; or if they want to go to stay behind one of the exhibits then it can.
For future notice, both hornbills have shift doors near the ground as the zoo might add a small mammal (maybe a Mouse deer since it was included in the master plan in 2008). Also the Asian complex is not done as the Zoo's Centennial Book, that was on display during the preview (probably won't be on sale until May), did mention Phase II and III briefly about a future Gibbon Island, "additional Asian animals", and a plaza. Hopefully that means Sun Bears, Orangutans, and the Indian Rhinoceros.