http://www.joblo.com/movie-news/ben-affleck-wont-be-returning-as-batman-so-says-brother-casey-174.

Update: Since Casey's appearance on the Dale & Holley with Keefe radio show, a representative of Affleck's reached out to Buzzfeed News and said, “he was having fun with the folks at the Red Sox game — where he threw out the first pitch in support of the Jimmy Fund — and not speaking from a place of firsthand knowledge.” Shortly thereafter, Ben Affleck's own rep contacted the same outlet and stated, “he'll continue to be Batman as long as the studio will have him.”
---

V.