In a recent report at Variety, they say that Warner Bros. hopes to produce eight to ten movies for the streaming service and that will include tapping into the DC universe.
"HBO Max is expected to lean heavily on Warner Bros. to supply it with exclusive content. The subscription service hopes the studio will provide it with eight to 10 movies, a number that could ramp up over time... Some of these productions could be tentpole-sized, with healthy budgets that could rival those of major feature films. Eventually productions will likely hail from the DC Universe, WarnerMedia’s in-house comic book division, as it looks for compelling content."