The new features in Flight Simulator X include:
* Improved graphics including enhanced texture resolution, new Earth model facilitating polar flights, true road data, region-specific textures, minimal 3D animals, star constellations, etc. Also, the scenery textures now line up with the automatically generated (Autogen) buildings. Maximum rendering-engine-supported scenery resolution of 7 cm/pixel (not available with default scenery).
* Airports now have jetways that move to the aircraft by the key combination Ctrl + J. (happens for AI aircraft automatically) Airport Vehicles also drive around the airport to you and AI aircraft. (Baggage cars, pushtrucks, fuel trucks, etc.) (International airports only)
* The built-in GPS support has been upgraded to include Garmin G1000 integrated glass cockpit, (select aircraft in the Deluxe version only).
* Improved ATC featuring certain non-FAA procedures where appropriate (for example, altimeter/QNH scale in metric units) and numerous minor updates such as an improved progressive-taxi feature.
* Improved and new default aircraft including, for example, an Airbus A321. Default aircraft systems modeling is rather extensively improved, featuring, for example, APU, fire protection, passenger advisory sign switches etc.
* Improved weather system, including better visibility modeling.
* Revamped multiplayer functionality featuring Shared Skies, a feature allowing multiple users to share the same cockpit.
* Tower Controller, a feature in the Deluxe version allowing users to simulate local control at many airports worldwide during multiplayer gaming.