There’s also no word yet on whether Black Lightning will stand on its own or take place in the Arrow-verse, but since CBS was able to pull off a crossover with The Flash during Supergirl Season 1, perhaps there’s wiggle room to connect Black Lightning to those CW shows, especially since it’s a fellow Berlanti production.
Although Gotham and Lucifer are both doing reasonably well, Black Lightning would be Fox’s first foray into full-blown superhero territory.
Unless Fox decides they want to get started on Black Lightning as soon as possible and air it as a midseason show, it looks like the project is being set up for one of the many news shows in the 2017-2018 TV season.