Yes, the gharials are moving to an outdoor area at the MOLA. This area is next to the old Herp building. I'm not exactly sure what will go here. They will have a fairly big area to work with, but in all likelihood it will get demolished and may not get used for some time like the old aquarium.
I have heard a rumor about that from a keeper I talked to about 2 years ago. He said that the aquarium would be downtown. I really don't know anything more though.