I'm waiting on WUSTL as well. I applied in late February and called last week. The person that I spoke with said that they have received "an unusually high number of applications" this year and are going to be taking longer with decisions.
I don't know. I'd love to go here if I get in. It feels like a good fit for me because of the flexibility of the program, location near my family, etc. but I would definitely need some sort of scholarship because I cannot do 60,000+ in loans.
Anyway, good luck and please post if you hear anything.