This year's Arrowverse crossover, Elseworlds, concluded on the CW last night. The crossover involved the shows Arrow, The Flash, and Supergirl, and introduced characters like Batwoman and The Monitor to the mix. Elseworlds was the first Arrowverse crossover, last year was Crisis on Earth-X, and like the comics, it doesn't look like CW is done with both crossovers and Crisis-es.
At the end of Elseworlds, a little teaser was shown for next year's crossover event: Crisis On Infinite Earths. The name echoes the title of classic event series from 1985 which streamlined the different universes of DC Comics. It also featured the death of Supergirl. Uh oh.
Here's the teaser:
Crisis on Infinite Earths is scheduled to start in Fall 2019.