The latest entry in Squeenix's FF spin-off series:
http://www.square-enix.co.jp/ffcc/eot/
This looks exactly the same as Ring of Fates released last year. (Also, the protagonist looks exactly like Adele from FFTA2.)
The big feature being touted this time is the "Pollux Engine: Cross Platform System", which apparently allows you to play on the Wii and the DS at the same time.
Japanese release on January 29.