Launched in November 2013, the under development 777X will feature GE9X new engines, new carbon fiber wings with folding wingtips and a denser cabin. The longer 777-9, seating 414 over 7,600 nmi (14,075 km), should fly in the first quarter of 2019 and be delivered from December 2019, while the shorter 777-8 would seat 365 over 8,700 nmi (16,110 km).