In an age in which downloadable content is often discussed when a game is released (or even before!), Square Enix has stated that it does not have currently have any plans for Final Fantasy XIII DLC.
"Regarding the DLC content, we feel that the final product is 100% enjoyable…it's the complete package," says Final Fantasy XIII producer, Yoshinori Kitase, and director, Motomu Toriyama in a joint statement." So we're not planning any DLC at this time."
No plans. At this time. That doesn't exactly rule out planning for the future, now does it?
"In regard to the rumoured cut content, we feel it was taken out of context," the pair continues. "There are a lot of ideas that are brought to the table, and then the team takes the best ideas out of those, and the final product is polished that way." A lot of those ideas were just that: ideas. They didn't make the final cut and are not in the game. According to Square Enix, the team is not looking into releasing this unused content as DLC.
Perhaps Square Enix is not ready to discuss downloadable content, and that's fine. But if there's no DLC, there will be disappointed FFXIII players. These days, DLC is not just expected, but a given.