An Ender's Game movie is in pre-production now actually. Apparently it finally happened because Orson Scott Card got a deal which included the level of creative control he required.
A lot of films never make it past pre-production so whether this film is actually finished is yet to be seen.
Good to hear he's still working on it, although as I recall they've been trying to get the movie made for decades now. (Meanwhile, Dune is being adapted for the third time...)
A lot of films never make it past pre-production so whether this film is actually finished is yet to be seen.