The news was confirmed by Weekly Jump magazine, and it states that the SeeD headquarters from Final Fantasy VIII will also appear in the game. As well as this, Squall Leonhart has been reconfirmed as part of the game. Squall and Quistis will be joining the likes of Cloud (FFVII) and Yuna (FFX) alongside a whole host of familiar faces - and some new, too! Another recently revealed character, Chocolatte - who may just be a relative of Chocolina, as like Final Fantasy XIII-2's merchant, Chocolatte will be around the World of Final Fantasy selling goods too.
I for one am super excited to hear that Quistis will be whipping her way back into Final Fantasy, this may just have piqued my interest in this game... We'll just have to keep our eyes peeled for any more exciting updates!
[source]
vBulletin Message