I think until you can actually get a measurment don't guess. Also, if it is further out it is likely to try and balance against the increasing weight of LiPo cells (6800 70c cells are heavier than the then 5800 cells when the TCX was around about coming out to us racers). Try and balance a TCX with a 6800, micro reciever and stubby servo without having to put weight on the motor side !
Pics of the latest edition of the TCXX are on REDRC now (sorry if i missed the link in a previous post). Looks good. Not a great deal of change really asside from the longer steering cranks, split blocks and gear diff. Strange that the front drives have fone back to 44mm, though do they promote more turn in ? hope that the Roche Spool will still fit it as they are bullet proof. At least also most parts will go across as spares. When the TCX came out alot of TC owners sold theirs ASAP, at least with this alot of it is cross changeable.