ohforsure
The North American carriers have been dumping their 744s as soon as they can get away with it - AC has just got short of the last of theirs. NW is gone 777 and UA has no money. If they had any I suspect 772LR/773ER would be the priority purchases. Also the busy trade in 744 F conversions
BA and the East Asian carriers sound like good bets as they have retained their 744 fleets.
SAA are talking about 380 which may or may not mean the end of their 747 fleet.
Ditto the likes of AI if they could get their government to draw up their fleet plan at better than a snail's pace while the new entrants are ordering 100 A320s at a time and Kingfisher looking for five 380s!