Part of what's made Rocksteady's two Batman video games such great experiences has been the pitch-perfect stories players encountered in each. The narrative contributions in both Arkham Asylum and Arkham City came Paul Dini, who's written excellent Batman stories for TV and film as well. But it seems that Dini may not be returning for the rumored prequel supposedly due out in 2014.
In tweets cited in an ArkhamCity.co.uk post, Dini says that he didn't even know about the alleged third Bat-game until recently. He also says that Arkham City was his last foray into Rocksteady's Batman video game universe.
Of course, with the alleged game two years out, there may still be a chance that Dini could contribute to the inevitable Arkham threequel. On the other hand, there could also be another writer from DC Comics' stable of talent handling the story instead of Dini. Either way, a very high bar has been set by Dini in the two extant Batman games and the next title in the series will have weighty expectations to live up to.