Boeing's proposed "Model 797" was revealed at Paris Air Show 2017 through an artist's rendering. The airliner is a new venture currently in-the-works and follows the much-publicized Model 787 "Dreamliner" which has held the company's attention for the good part of a decade. The Model 797, with roots going as far back as the Model 707 of 1958, is viewed as a bridge design between the in-service 737 and the larger Boeing aircraft models like the Model 787. It is intended as a twin-engined design with a twin-aisle seating arrangement and capable of short-to-medium haul routes including coast-to-coast in the United States. Seating will be for 220 to 270 passengers and range will cover up to 5,985 miles.
The company has already started to gauge interest in the intermediate design with good feedback having been given thus far with nearly sixty potential customers being approached. Much of the experience in designing, developing and building the Model 787 will come into play in the Model 797 program.
The designation of Model 797 is not official as of this writing (November 2017). It is known officially as the New Midsize Airplane (NMA) and the company plans to have the aircraft ready for first deliveries sometime in 2025.