Simon Kinberg has written and/or produced on X-Men: The Last Stand, X-Men: Days of Future Past, X-Men: Apocalypse, Deadpool, Logan, The New Mutants and even the new FX series Legion.
The movie will reportedly be tackling the Dark Phoenix storyline, which is something that was originally teased in X2 and very poorly and loosely adapted in X-Men: The Last Stand.
Still, X-Men 7 is reportedly being worked on and now it looks like we may know who is being eyed to direct it; Simon Kinberg.
The ball is in their court, though, so it is possible that we could be hearing an official announcement soon that Simon Kinberg will be directing the next X-Men movie.