In addition to revealing a trailer for Shin Megami X Fire Emblem or Illusionary Revelations#FE as it is called in Japan, Nintendo announced some of the development staff behind the Wii U game.
Shinjiro Takada, producer of the Devil Survivor series, is the producer behind Illusionary Revelations#FE. The game is being developed internally at Atlus with the theme of modern Japan with characters that grow from various concerns and troubles in a RPG. While the game takes place in the real world there is a secret fantasy world that exists in parallel with characters from the Fire Emblem series.
toi8 who worked as a character designer on .hack//The Movie and a movie for the popular Chain Chronicle series is the character designer for Illusionary Revelations#FE.
Shin Megami Tensei X Fire Emblem is slated for release in winter 2015 in Japan.