Etrian Odyssey IV (or Sekaiju no Meikyuu IV: Densou no Kyojin) is a title from Atlus for the 3DS set to release in Japan, North America and Europe.
With a release date of July 5th, 2012 it is coming up rather quickly. Perhaps the most interesting feature I have seen is that you can create your own dungeons/maps to share with other players. For people who enjoy content creation like that of RPG Maker or Little Big Planet, this may be an appealing feature.
Below are some scans and also screenshots of this upcoming release.