DC Comics Rebirth Spoilers for Detective Comics #966 follows.
The book opens in the future with…
…an older Anarky…
…fatally subdued by a gun-toting Batman.
Renee Montoya is the Gotham City Police Commissioner and the city is a no go zone for this lethal Batman.
This Batman appears to be a member of a future adult Justice League made of up of adult Teen Titans including Conner Kent no longer Superboy, but a Superman, despite Conner being MIA in DC Rebirth.
Future Tim Drake Batman had saved present day Tim Drake Red Robin from Mr. Oz’s prison…
…who then tells the stories of other future Batmen including Dick Grayson, Jason Todd and Damian Wayne; all failures.
Future Tim Drake Batman realizes that is younger self has never heard of Conner Kent so the future is not set in stone leading him…
…on a mission to kill…
…Batwoman?!