Square Enix has trademarked the phrase "Kimi to Kiri no Labyrinth" in Japan. Translated this roughly means "You and the Foggy Labyrinth". Now, that may not be the most eye-catching of titles, but the recently released I am Setsuna, which also is distributed by Square, is called Ikenie to Yuki no Setsuna in Japan.
This has led to speculation that this may be Tokyo RPG Factory's next project. They have expressed a wish to take the genre back to its glory days so we'll see if this is their next step in doing so.
Thanks, Gematsu.