Given that Supergirl still exists in a parallel Earth, perhaps the next big event will be a variation on Flashpoint in an effort to merge the Arrowverse.
The Flash, meanwhile, has more than his fair share of Speedsters to contend with, while Supergirl regularly deals with alien foes.
In the meantime, each of the superheroes have plenty of individual problems to deal with on a weekly basis.
As soon as new information arrives, we’ll bring it to you, so stay tuned. Supergirl airs Mondays @8pm on The CW, The Flash in the same time slot on Tuesdays, Arrow on Wednesdays, and Legends of Tomorrow on Tuesdays after The Flash.