Batman: Arkham Knight will now launch worldwide on June 23, 2015. Rocksteady developers hates to make any compromises, so they’re sorry about having you wait for their epic conclusion to the Arkham trilogy. As a reward for your patience and understanding, and to make the wait even more unbearable, Rockstady is pleased to whet your appetite with a new gameplay video of Batman: Arkham Knight.
My Rocksteady contact assured me they are very sorry for the wait. Please cut them some slack they are plenty of games out and coming out till then. They are doing their best to make the last Arkham a very complete experience.