I'm just going to throw this out there...
In 2.0 all maps will be hidden and we'll have to re-explore them. Many aspects of the game will change such as a chocobo's function(s) or how players acquire them. My hunch is that players might have to re-acquire chocobos in 2.0 and that's why legacy players are getting them right off the bat as a reward for playing prior to 2.0.
Anyone else agree with this point of view?