Sort of. At least as a DLC and its only his clothes.
Ezio’s clothes can be worn by Noel and they feature the style from Assassin’s Creed: Revelations, which launched earlier this month.
No word on a release date yet. Final Fantasy XIII-2 is a direct sequel and will be out at the end of January for the US and early February for the UK. Those in Japan will see the release in December. Hopefully at that time, we’ll have more information on this DLC and other goodies.