Rocksteady is not done with Batman yet as they have a Batman VR game in the works. Unknown if the game is brand new or old content.
If I'm not mistaken, that is Mark Hamil (Luke Skywalker), as the voice of the Joker. Classic voice and laugh. Too bad that's all we get to see is promos and not real footage. But it should by something different as we are moving into new territory. The jury is still out.