Lockheed Martin today announced their new 64-bit version of P3D on their website .   Prepar3D v4 New Features  64-bit Application Unicode Compatible New User Interface Design Compiler and SDK updated to Visual Studio 2015 Regions of updated Airport & Terrain Data New 3D Rain/Snow system Scripting capabilities (Scenery/Model/Material) Dynamic lighting support Added PDK functions to draw primitive objects Updated D