While it’s not necessarily going to be part of the DC Extended Universe, there is another key DC Comics adaptation in the works over at Warner Bros. A big screen adaptation of Neil Gaiman’s Sandman has been in the works for some time now.
Still, if Watchmen could be brought to the big screen after many failed attempts, Sandman may eventually do it as well.
Not being a part of the DCEU, it could be a while before this one gets going, as the source material isn’t terribly easy to adapt.
He returns to find that the empire he had built is destroyed, and simultaneously works to rebuild all that he has lost, and also seek retribution.