The cross-progression will be the new feature coming to Dead by Daylight that will allow you to keep your progress and continue playing even from different platforms.
It will be available for Nintendo Switch, Steam and Google Stadia and will work by creating an Behaviour Account through a specific website.
This is what you will see when thefeaturewill be available and you will start the game:
This is what you will see in the game settings:
This is what you will see if the cross-play session expires (to date the expiry timer is set to 24 hours):