The Hollywood Reporter announced that Dwayne Johnson would be leading his own Black Adam film and within that same announcement we got word that Henry Gayden will be penning the script for Shazam.
Henry Gayden is mostly a television writer, but did pen the script for the film Earth to Echo.
Gayden himself confirmed the report that he was writing the film when I asked him to confirm the news and showed his excitement in doing so.
@annericelover Confirmed and loving what's to come… 🙂
— Henry Gayden (@HenryGayden) January 20, 2017
Source: The Hollywood Reporter