The full game is set to be released on January 31st in North America. The Aussies can expect the game on February 2nd, while our good old friends in Europe get it a day later.
FFXIII-2 is said to contain loads of sidequests, lots of mini-games, a proper monster arena, a new monster-capturing ability and a Moogle named Mog, among other things.
God Bless and Play Hard Gamers!