This will be director Leos Carax's first English film.
"There's lots of gay sex in it!" McGregor proclaimed on Stephen Colbert's Late Show.
Watch an exclusive clip from Goodbye Blue Sky, a new short film about love that defies labels.
The Sony Pictures film planned for release in 2018 does not reference the title from the second book, The Girl Who Played With Fire.
Terrence Malik's new film debuted last week at SXSW.
Gal Gadot flipping cars and deflecting mortars? Check.