From - http://xbox.joystiq.com/By: Majed Athab
It looks like SNK is already preparing to outfit King of Fighters XII with DLC. The upcoming fighting game will have additional purchased content available on the Xbox Live Marketplace (as uncovered by Siliconera) and, presumably, on PSN as well. What that content is exactly, we don't know just yet; however, we assume this means more costumes and game modes a la Street Fighter IV. Maybe it means more characters ... like all the ones missing from the roster screen.
In addition to DLC, KoF XII has console-specific online modes. The PS3 version features a "Clan" mode which is not found on the 360 version (check out the image above); however, the 360 version has a "Ranked Match" option while the PS3 version does not. Hmm ... you don't think SNK would charge for these modes as paid DLC now, would it?