Square Enix have unveiled their latest Final Fantasy game for iOS, Final Fantasy: All The Bravest, which launches on January 17th worldwide. Drawing inspiration from real world Gashapon machines the games in-app store contains random character DLC, meaning that you have a 1/35 chance of getting any specific premium character you want, aside from the starting deck. In the future it's possible those odds will only go higher if, and when Square-Enix release more characters.
If you are looking for more game worlds to play in it, the website lists Final Fantasy VII, X and XIII as purchasable content, those are also available as paid DLC.
It's also worth noting that the information page for the title lists Tetsuya Nomura with the job title 'Creative Producer & Original Concept,' which likely means he's been heavily involved in the structuring, and overall design of this downloadable title.
Update - The pricing for the game has been revealed as $3.99 for the basic game, $3.99 per 'game world,' with each 'premium character' costing $0.99. To purchase all of the DLC it would cost you, including the base game, a total of $50.61.
For more information you can check out the English version of the titles information page.
Update 2 - Here's a twenty minute plus YouTube video from touchgameplay which demonstrates all of the features of the game. It appears you touch your characters to launch attacks, however they are predetermined actions with player choice is seemingly nonexistent.
A0306BP10RWTUKSY (yep, you're a winner)