Director Andy Muschietti confirmed the news on his Instagram on Friday by surprising Calle with the news.
DC's speedster is set to encounter a number of Batmen in his stand-alone film.
The news comes as actor Ray Fisher revealed WarnerMedia has opened an investigation into controversial reshoots for 'Justice League.'
Ezra Miller's Barry Allen will meet a different Bruce Wayne in his standalone film.
The DCEU just bolted into The CW's Arrowverse!
The actress also dishes on making her version of the character different from the CW series.
The 'Fantastic Beasts and Where to Find Them' star talks to ET about playing Barry Allen and joining the Wizarding World.
