According to online rumors, the upcoming issue of Famitsu or Dengeki will feature a whole cover story on an unannounced Square Enix title called "Lord of Vermilion".
There are no details yet as to what the game will be about or what platform it will be released on. All we have is a magazine scan, and from the looks of it, this may be something outside of the world of Final Fantasy.
Stay tuned to PSU for more information.