The Boeing 777X features folding wingtips for better airport compatibility and flight efficiency. Initially explored for earlier aircraft models, the technology was not adopted for the Boeing 747-8 due to design complexities. Instead, the 747-8 showcases raked wingtips enhancing its fuel efficiency without added complexity. Despite its advantages, the 747-8 faces declining passenger use as airlines prefer more efficient aircraft. Innovations like folding wingtips may play a more prominent role in future aircraft designs.