Producer Marc Guggenheim has hinted at the renewals of Arrow, The Flash, Legends of Tomorrow and Supergirl for the 2017-18 season, after confirming plans for another four-show crossover next year, per Deadline:
At the end of the day that is always up to people far higher in the food chain than myself. That said I will say that I would be very surprised if we didn’t end up doing a four-show crossover where it’s not debatable to whether it’s three shows or four shows, where it really is all four shows – and God help us.
Arrow is currently chasing a sixth season; The Flash is closing in on Season 4; with Legends of Tomorrow and Supergirl both eyeing third seasons.
Stay tuned as we continue to monitor the survival status of all four DC’s superhero series…