Yep, Gal Gadot from the Fast & Furious series will be playing the role of Wonder Woman.
Didn't know Nightwing had been confirmed for the movie though, what I'm hearing is he'll possibly appear in Arrow. Which leads me to love and hate the series at the same time. From the moment Oliver Queen made his first appearance in Smallville's sixth season I said, they've just made the inclusion of Bruce Wayne/Batman complete unneeded in that franchise's universe. And because they couldn't make a stand-alone Batman series at the time, they just made into Arrow which has been uber-awesome what with the second season's cast of the League of Assassins.
Meh, at least I've got other movies to command my interest in the upcoming months.