MY18s are out, looked at cars.com, found some listings that had photos taken of seat frame, found a MY17 and compared it to the MY18 seat frame and it ultimately LOOKS the same...Not to say they didn't makes changes to the foam but who knows...If you'd like to compare for yourself:
Both listings have seat frame photos, most listing didn't...
https://www.cars.com/vehicledetail/detail/724793434/overview/
https://www.cars.com/vehicledetail/detail/716777345/overview/
Both listings have seat frame photos, most listing didn't...
https://www.cars.com/vehicledetail/detail/724793434/overview/
https://www.cars.com/vehicledetail/detail/716777345/overview/