Still, we have to differ between the "Longer Range B747-400" (ordered by Qantas) on the one hand, and the B747X (stretched) on the other hand. Boeing confuses people by introducing the "Longer Range" prefix to current designations, e.g. B767-400 and B747-400, which aren't any kind of "new" models - just enhanced versions. In opposite to these "longer range" upgrades, the B747X will be a completely new airliner, based on the B747-400, with stretched fuselage, new wings, etc.! Boeing should dub the new model B747-500X to clear up the potential misunderstanding. BTW, I heard that FedEx was in negotiations with Boeing to acquire the B747X Freighter (in addition to the A380-100F or by cancelling the Momerandum of Understanding with Airbus???). Keep in mind, a MoU does not necessarily mean the airline will acquire the related aircraft!