https://www.gamespot.com/articles/horizon-zero-dawn-studio-hires-talent-from-rainbow/1100-6462356/

Guerrilla Games appears to be staffing up for a new project, and we may have some idea of its direction from the talent it's been acquiring. The studio has brought on some of the leads behind Rainbow Six Siege, which could suggest it's eyeing multiplayer for its next game.

Push Square reports that Guerrilla hired Simon Larouche in February, the game director behind Siege and a Guerrilla veteran from his work on Killzone 2. Chris Lee, who served as an online and multiplayer designer for Siege, has also been brought on by Guerrilla as a principal game designer.