It's a PS3 exclusive featuring two lead characters; one warrior and one magic. It launches in Japan January 28th. It's rather close to FFXIII's date.
What time in February is unknown, only that next month it will be releasing in the US was announced, while Europe gets a surefooted March 12th. Last Rebellion is debuting in the west awfully close to Square Enix's Final Fantasy XIII - it might sting sales.
Last Rebellion is cell-shaded in visuals, so it's not competing for prettiest princess. Do you have a weakness for the JRPG, or do they totally turn you off?