It’s not yet clear if this is the same role we’ve heard that Tessa Thompson, Zoe Kravitz and Naomi Scott tested for. But Variety says that Clarke tested with a different group of actresses that also included Kiersey Clemons (The Flash movie,) and Jessica Henwick (who played X-wing pilot Jessika Pava in The Force Awakens, so, uh… Okay.) Hopefully, the two different groups mean there’s another role yet to be officially cast, but at the moment everyone but Clarke is just a rumor.
Interestingly, StarWars.com only gives ‘2018’ for the film’s release in this latest dispatch. It was originally announced for May 25, 2018, despite The Force Awakens, Rogue One and Episode VIII all being moved to December releases. Han seems likely to follow suit. Filming is expected to begin early next year.