To add in my 5 pence worth,
Over the months we have heard that the airlines would jointly re-introduce servcies, similar to the very first services in 1976, so this day could be the day for BA sercies to JFK to start.
The other point of note is that Air France will only do Concorde servcies Mon-Fri, where as BA seem commited to the whole 7 days. So what do Air France do at the weekends. One though is charter day trips, but they did say no more charters after last years accident (mainly becasue of lack of aircraft)....But in the currect economic climate in the airline industry any revenue coming in is most welcome and a full aircraft of charter passengers make a nice tidy sum, even though it is nowhere near that of a full load to New York.
As GDB says keep a look at http://www.concordesst.com
as the latest developments go on this site as soon as they are known.