It has been confirmed today that the Final Fantasy XIII-2 demo will be available as early as January 10, 2012 for North American PS3 users. It will then release worldwide for the remaining PS3 users and all Xbox 360 users on January 11, 2012.
While Square Enix is giving a chance for players to experience the improvements, they haven't revealed what the contents of the demo will consist of.
The full game will release in the U.S. on January 31st, and make its debut in Europe on February 2nd.
Square Enix also released a new Moogles trailer which can be seen below.