She’s not on the IMDB roster, but it looks like Dakota Fanning is in Ocean’s Eight
IMDB is pretty much the official source for anything movies in terms of what actors are in what and what the upcoming movies are. As of right now however IMDB doesn’t show Dakota Fanning as one of the cast members of Ocean’s Eight.
Dakota Fanning was however seen on the set of the film Ocean’s Eight that’s currently in the making, so she is obviously however in it.
As well as Dakota Fanning (although she isn’t official in terms or the IMDB roster as of yet), Helena Bonham Carter, Damian Lewis, Sandra Bullock, and Cate Blanchett are officially on the IMDB roster, and where also recently seen on the set of Ocean’s Eight.
Ocean’s Eight is an upcoming American crime drama film directed by Gary Ross and written by Olivia Milch. It is a spin-off of the Ocean’s Trilogy, and will be released on June 8, 2018 by Warner Bros. Pictures. Principal photography on the film began on October 25, 2016, in New York City.