quite a while ago (I heard about it at least a month or more ago). I just heard yesterday that JetBlue will be coming in at around the same time Song pulls out.
There was a long discussion thread on the board about Song leaving. Many people with experience in the airline industry/heavy flyers had many thoughts on the subject, but since no one knew about JetBlue, I would not consider that the reason.
Currently, you have Continental flying non stop, with JetBlue coming and USA3000 also joining soon. I'm hoping the fares will drop, but if not, I'll have to continue to travel from LGA or JFK (not my preferred location but when you save over $100/ticket, it's more palatable).