Joseph Gordon Levitt is our new Batman (probabaly)

Hit-Fix says that not only does Warner Bros. want Joseph Gordon Levitt to become the new Batman in the 'Justice League' movie set for 2015, and a new series of Batman movies after that, but the studio is acting so quickly to wrap this deal up that they speculate he may also make an appearances at the end of the new Superman movie, much like how the individual Avengers movies included quick scenes showing other members of the Avengers.

So there you have it. Second hand speculation, only on wwtdd!