I heard that from several JetBlue pilot friends at Oshkosh, and they seemed to believe it was definitely going to happen. No one had a specific timetable, although the general impression was that it would probably happen in 2010. That's all the info I've got.
That's exactly what you do. During the transition from ICT to RFD in my previous life, we had RFD up and running with a couple of people up there testing for a week. Then one day had them start all the ops while we had a couple of folks in ICT ready in case things started to fall apart. Once RFD had been running the show for a few days, ICT was "shut off".
Obviously this was a small scale operation, but any move like this would require this type of planning.