Fire Emblem: Awakening, like Nintendo’s last major RPG release, Xenoblade Chronicles, has dual audio voice-tracks—one in English and one in Japanese.
Nintendo of America sent us an early copy of the game, and we confirmed the feature for ourselves upon receiving it.
Fire Emblem: Awakening will be released in the U.S. on February 4th and in Europe in April. This Thursday, Nintendo will release a free demo for the game on the U.S. Nintendo eShop.
Source: http://www.siliconera.com/2013/01/15/fire-emblem-awakening-has-dual-audio-voice-tracks/
Example (Huge spoiler):
[SPOILER="Spoiler"][video=youtube;El7ZKEqAJRc]http://www.youtube.com/watch?v=El7ZKEqAJRc[/video][/SPOILER]
Cherries on top of what is now my favorite Fire Emblem game.