Steph, they can't give me an exact date for when they'll come home, but it will probably be another month. They'll be the equivalent of 34 weeks gestation tomorrow, and they typically need to be in the nicu until 38-40 (i.e. until the equivalent of being full-term).
Saef, Carter will not get to meet them until they come home, but he has gotten to sniff some blankets we brought back from the hospital. He seemed politely interested, but more interested in sniffing Ben's pants that smelled like his parents' dog. Carter has been acting more stressed in general though -- he gets nervous and upset when we leave for the day. I think it is a combination of reacting to our stress level and the fact that there have been thunderstorms lately.