Airbus still has plans to make an A380plus, despite no airline really showing any interest. Emirates wants a neo.
Which airliner would you like to see?
I want to see an A380-1000 cause the A380 looks a bit short and long planes look cool. But I think it's quite clear that it will never be produced, as the capacity is just way too massive.
The Boom Overture will be the next supersonic airliner, assuming that they have enough money by the time serial production comes. Japan Airlines have expressed an interest in the aircraft, investing 10 million dollars in the company. Japan Airlines might actually purchase the aircraft.