Apparently, in the minutes after Nintendo's rather lackluster 3DS press conference, Reggie told some reporters in the audience that Fire Emblem: Awakening is coming to North America. The only confirmation I have on this so far are tweets from people such as Stephen Totilo.
Why Nintendo didn't announce anything about Fire Emblem at the 3DS press conference itself, I have no goddamn idea, but I am happy to finally see some confirmation.
EDIT: Updating the OP to denote that Nintendo has since given official confirmation via Twitter. So let the celebrations commence!