Thanks for the info everyone, especially the flight list Prospero very interesting.
Having flown to DXB on a 747 a couple of times and they have each been the version with WT+ ahead of CW on the main deck I was surprised to see the seat map for the super J. But given the number across the fleet I suppose I shouldn't be surprised to see them outside of JFK. Either way I'm certainly happy to have the Panasonic IFE rather than the 3 square inch screens on the older 747 cabins.
Also what is this Jet Tracker magic you're referring to?