2. Given recent disappointments with developments not coming to fruition I'm not getting too excited until I see it part-built (maybe not even then, we'll see).
I think the new Gibbon area will definately get built, the existing house has a lot of empty cages now and some Gibbons have been relocated temporarily elsewhere in the Zoo. I don't know if they will demolish the existing Gibbon house afterward, as it is very ugly. But then so is the awful ChimpRow/GreenMile area which has been kept and pressed it into new service as a Leopard enclosure.