Boeing and Airbus are working on the next generation of narrow body aircraft. They would be at least 10 to 15 years away from service in the most optimistic time frame. They are not being developed as pilotless aircraft and they will be in service for at least 40 years in their various forms. Any attempt to reconfigure them to pilotless will require recertification. If you don't think thats an issue then look at the 737 flightdeck, an aircraft that has been in service for 50 years.