It seems pretty clear that Johns' return to writing a DC comic will involve the Watchmen characters that were behind the Rebirth event. But will that be a new series exclusively focusing on those characters or are we looking at another crossover event? There's still a lot of mystery surrounding Ozymandias and Doctor Manhattan's role in Rebirth so the safe bet would be another event series continuing on from where Rebirth left off.
As far as a new DCTV series is concerned, will it be airing on The CW, Fox, Syfy or some other network? And with the large number of DC characters already appearing on the various shows, will it be another spinoff series? Hopefully, some exec has decided to circle back to that Titans TV show that was in development a few years back...