They're not officially announcing anything beyond the season pass yet however.
Stump Translation:
JeuxVideo - Original French said:JVL : Allons-nous devoir payer pour endosser le rôle dune héroïne comme Luna ou autre ?
SHY : Il y a clairement une demande en ce sens, et nous allons nous pencher dessus.
Plus d'infos sur : http://www.jeuxvideo-live.com/news/...ru-yoshi-au-sujet-des-dlc-82488#ixzz4OgQOStAp
Stump Translation:
Interviewer: "Will we have to pay to play as a heroine, like Luna or someone else?"
FFXV DLC Producer: "There's clearly a demand for something like this, and [we'll look into it]"