"but in a large part down to the assumption that cattle class will be configured in 3-4-3 form rather than the 3-3-3 typically seen on current 777s"
3-4-3 is the most common seat configuration used on 777, 3-3-3 is a rarity. 777X won't change main tube diameter but will make it longer and will have composite wings with foldable up wing tips.
Biting the hand that feeds IT
