Based on the initial business jet model released in 2017, NextGen Simulations upgraded their Citation CJ4X to Version 2, only for P3D4.
The modern airplane has now advanced features : FSLabs’ Spotlights, A2A Simulation’s rain effects on the windshield, presets for ChasePlane camera tool, and PBR materials too. It’s a payware upgrade for the registered users of Version 1.