Studios specified … Hitman developer IO interactive, Crytek, and Avalanche Studios.
IO Interactive - makes sense. Near unique main game series. Game structure well suited to a GamePass model. Owned by the management. Good fit.
Crytek and Avalanche both make good sense from a tech, game-engine perspective. Very strong technically and very strong PC experience too.
Crytek is also privately owned and Avalanche a subsidiary of Nordisk Film which again make both good candidates for a surprise announcement.