A rumor originally reported by Kouli (a well-respected member of the Gamefaqs community; I know I know, lol @ Gamefaqs but Kouli is a good, reliable guy). This story was also picked up on in the Dutch Playstation magazine, as per finalfantasy-xiii.net. Two different sources, so I'm gonna go out on a limb and say its probably true.
Supposedly the information will be officially released on the official site tomorrow (don't know if its the JP or NA site). The first update is believed to include:
Since they had to leave some stuff out, I'm not at all surprised at this. I figured they'd find some way to release it, and DLC is the perfect avenue for that. Although I thought the weather system was already included in the game, since they hyped it up on the JP site close to release.- New Game Plus: Clear Data will let you keep Items, Gil, Abilities...etc and start at the beginning
- More missions: #65 to #87
- Weather System
- and two unknown things yet to be known
This may also mean that the DLC era will mark the end of the "international" versions as we know it (thankfully), at least for PS3 and 360.
Links below. Please be very, very careful when reading the Gamefaqs boards tho. That place is A. terrible to begin with and B. littered with major spoilers.
This Week's Ultimania Says DLC In Late March (Rumor) - Final Fantasy XIII Message Board for PlayStation 3 - GameFAQs
Rumour: Final Fantasy XIII DLC Coming Soon? - Final Fantasy XIII: News, Trailers & Screens ~ Final Fantasy-XIII.net