Square Enix shared more details about their Final Fantasy XIII-2 downloadable content plans. This video shows the battle with DLC monster Omega, the two costumes revealed today, plus a resort style outfit for Serah. The bikini outfit is out of season since its slated for release in February.
Perhaps most interesting is a colosseum battle with Lightning shown at the end of the movie. Lightning is seen dressed in her original Final Fantasy XIII costume about to face Serah and Noel. The colosseum battle DLC does not have a release date or pricing info.