Latest Famitsu leaks to pop up on the internet mentioned that Square Enix is planning to release 'Final Fantasy VII G Bike' for the iOS/Android Smartphone devices in 2014. It plays similarly to the G Bike minigame in FF7 but with added Sliding and jumping. You can choose between several different bikes and customize them with Materia. App is being developed by Square Enix and CyberConnect2.
There's also mention that further FF7 Gold Saucer mini-games are to also appear on Smartphones in the future. (snowboarding anyone?)
Video of the G Bike minigame for reference: https://www.youtube.com/watch?v=looYNiI9Gck
Copypasta'd from this thread by Flying Wonkey on NeoGAF