Update: A quote from the latest issue of Dutch Playstation Magazine apparently has Kitase saying pretty much the exact opposite, “We did prepare a DLC but it will arrive a little later in the west.” So yeah, it might be best to wait for the official announcement..
Original story: While there isn’t any Final Fantasy XIII downloadable content currently in the works or even planned, it remains a possibility, producer Yoshinori Kitase has apparently said in an interview included in the game’s Ultima Guides.
If the report pans out, Square Enix considered making DLC during the RPG’s development but decided to focus all their attention on creating a complete, single package instead. That does not rule out add-on content once the game is out though as the game’s framework does allow it. “If asked if it’s possible or impossible, it’s possible. However, at present we’re not considering it,” Kitase allegedly said in the interview.
When talking about possible post-release DLC last August, Kitase said that they could possibly release “new areas, items or enemies” but that that they wouldn’t be expanding the story. “… these would not be expansions to the story, only the gameplay … The entire story of FF13 will be on the disc.”