TV versions of DC comics are looking to be rather decentralised.
Maybe the CW will get to tie-in The Flash with their ongoing Arrow, and perhaps even add another couple of characters to the mix as the years go by, but the Batman series, Gotham, is set up at Fox and now, it's NBC who have ordered a pilot for a John Constantine series.
As you may recall, the show has been developed from a pitch by Daniel Cerone and David Goyer. It's apparently going by the name Constantine, like the movie, rather than Hellblazer, like the comics.
Daniel Cerone is likely to run the show if it goes to air. His previous credits include Charmed, Dexter and, like Gotham's Bruno Heller, The Mentalist. The timing is such that, if the road ahead is smooth, Constantine will be on TV this autumn.
I know we're expecting another American John Constantine, but we don't actually know for sure just yet… they might go for a Brit. Or a Blonde. Or an actor. Any of those things that the fans have been asking for.