The Airbus X EXTENDED includes 5 different models of the A320 and A321, with many systems fully rewritten to make them more realistic.
New MCDU, AP, FMGS and FADEC
The MCDU can handle flight plans that includes SIDs, STARs and routes and will guide the aircraft laterally and vertically during the whole flight.
New flight model, new Auto Pilot systems with standard protections (pitch, bank and speed).
Advanced fuel planner, RAAS, Digital Flight Recorder and NavDataPro navigation database (by Lufthansa Systems, and backwards compatible with Navigraph)