Mulan
Disney's live-action remake of the 1998 animated favorite Mulan is, thankfully, really live action and not an uncanny Lion King situation (although no doubt there'll be plenty of greenscreening). A young woman (the Chinese star Liu Yifei, who's been in the news for not-great reasons) disguises herself as a man and takes the place of her father in the Imperial Army. Don't expect the songs from the original.