On September 2007, Airbus rolled out new design advances to a gathering of 100 representatives from existing and potential XWB customers. The A350 XWB will be built on the technologies developed for Airbus A380 and will have a similar cockpit and fly-by-wire systems layout. Airbus claim that 52% of the aircraft will be made out of composites, 20% Al/Al-Li, 14% titanium, 7% steel and 7% the balance. This compares to the Boeing 787, which consists of 50% composites, 20% aluminium, 15% titanium, 10% steel and 5% the balance. October 2008 is the Airbus internal goal to freeze the design and Airbus expect 10% lower airframe maintenance cost and 14% lower empty seat weight than competing aircraft.Airbus claim that the new design comprise a better cabin atmosphere with 16% humidity level during flight cruise and typical cabin altitude at or below 6000 ft, pressurization at 6,000 ft (1,800 m) and flow management system that adapts cabin airflow to passenger load with draft-free air circulation.
