According to Rivian, the R1S SUV will come standard with third-row seating. On other SUVs it's an option but not here fortunately. Does anyone know what options Rivian will introduce on the SUV? So far all I could find is that adventure gear upgrades will be coming: "Yes, you’ll be able to outfit your vehicle with gear and upgrades to help complete any adventure. At launch, you’ll be able to choose to add the flexible crossbar system for both the R1T and the R1S, and the Camp Kitchen for the R1T."