WWE Immortals is a upcoming Professional wrestling mobile game based on World Wrestling Entertainment for iPhone and Android which is currently in-production. The game is being developed by NetherRealm Studios and will be released sometime next year. The game is being produced by WarnerBros Interactive and WWE, it will be free on app stores.
The companies had this to say "It’s a free iPhone and Android mobile game that features epic Superstar battles in a fantastically re-imagined WWE world." This is probably following WWE Supercard's success.
It is set to be released on January 15, 2015.