Been having the same issue with flight 919 (DFW-FLL) on March 1st, for several months now. Even though that same flight, has a seat map loaded and available for every other day, it does not for March 1st. Called in to care, and of course they said it may be because the flight is so far out, that it hasn't been loaded yet. If that were the case, I wouldn't think that all dates for that flight have a seat map available, and it's the same aircraft. Not to mention that the flight is under 90 days away. They currently have me in the bulkhead, and I am not keen on that.