Announced at E3 2017 Metro Exodus has not had time to acquire serious details. The developers shared a common synopsis, but the gameplay has so far shown very little.
The situation may change at The Game Awards 2017. According to the organizer of the event, Jeff Keillie, at the ceremony we will see Metro Exodus – the truth, in exactly what kind, he did not specify. It could be a CGI trailer, a gameplay trailer, or even a complete passage from the game.
Recall that in the game you have to travel on an armored train on the post-apocalyptic wastelands in search of a new home for the survivors. Metro Exodus will combine linear levels and large open locations, and put emphasis on exploring the world.