They're doing a lot of hiring - 3 interview classes a week, New Training class every monday. If they call, they WANT to hire you.
Future uncertain right now because media is getting on their soapboxes and saying Delta is going to sell them (Comair is a wholely owned subsidiary), possibly soon. If you want more info, Google News: "Comair"
DAL has been very vague on the subject, saying they haven't ruled out the possiblity of a sale, meanwhile they (DAL) are outsourcing some of it's flying to places like SkyWest, and being very vocal on their intent to focus on the international market.
You'll be based at JFK out of training, and reserve time seems to be on the order of a few months (4-8).
Note: I'm not an expert, I don't fly for them, but i've interviewed and done some research.