Boeing unveils features of upcoming long-range twin-engine jet

Boeing claims a "5% better aerodynamics than the rival A350-1000" due to these wingtips. While design innovations focus on efficiency rather than speed increase, both variants cruise at Mach 0.85, consistent with other widebodies like Airbus A350 and Boeing's own Dreamliner.

The GE Aerospace GE9X engines power this aircraft, boasting a fan diameter greater than that of a Boeing 737 fuselage. These engines promise increased fuel efficiency and quieter operation compared to previous generations.

Despite advancements in engine technology and aerodynamics, there is "nothing special about the Boeing 777X's cruise speed." It remains an efficient aircraft but not supersonic. The aviation industry largely focuses on fuel efficiency rather than increasing speeds beyond current transonic limits.

As Boom Supersonic works on bringing back supersonic travel with its Overture jet capable of Mach 1.7 speeds, it does not compete directly with Boeing's long-haul-focused designs like the 777X.