---------------------
Screenshots: http://www.gamer.ne.jp/news/201212070033/
1800 yen
Dec 20th iOS, 2013 Android
According to the Japanese article, the game will have improved audio and more than one difficulty level aimed at beginner players.
-----------
Credit to Yottamol
https://itunes.apple.com/us/app/final-fantasy-dimensions/id540992837
https://itunes.apple.com/us/app/final-fantasy/id354972939
https://itunes.apple.com/us/app/final-fantasy-ii/id354974729
Description states:
"Take advantage of a limited-time sale celebrating the coming release of FINAL FANTASY IV!"