Just saw this on Reddit
Anyway, Jason Schreier made a comment that Horizon 2 and God Of War 2 are already being produced.
She was talking to a fan at Star Wars celebration cosplaying as her Battlefront character Iden Versio, to where the cosplayer mentioned that she got her into playing Horizon Zero Dawn. She then replies "It's incredible, wait 'til you see the sequel. You're gonna die - I know some secrets! - you're gonna die."
https://clips.twitch.tv/PuzzledBloodySashimiANELE
Janina voiced the role of Tatai in The Frozen Wilds DLC for the first game
Anyway, Jason Schreier made a comment that Horizon 2 and God Of War 2 are already being produced.