Can't speak for the Jay Flight, but I do know that Jayco also made some changes to the Eagle FW. In our case the couch changed from a trip-fold sleeper to an L-shaped sectional style - which we don't like or want. The dealer didn't know anything about the change either, so called Jayco. From what we were told, the changes were made about three weeks ago, but if the order was in prior to the changes being made, you'll get what you ordered. We already had our VIN, and the unit was due off the line this past Friday, so we'll hopefully know for sure that we got what we ordered in a couple of weeks.
There may be other changes too, but this is the "big" one that caught our eye.
Rob & Kelly, Bella & Brady (Miniature Schnauzers)
2016 Eagle 323LKTS
2016 Ram 2500 6.7L CTD
2015 White Hawk 29REKS Summit Edition (Traded)