This is a nice little add-on for the JAR A320neo - it allows aircraft skins to feature the new reflective layer that was created by Ddenn. I guess the plug-in is aircraft specific in that Ddenn allows the plug-in to be integrated into certain aircraft. I don't know if the plan is to license it to X-Plane or just on a per-aircraft basis or what, but for the JAR A320 it is freely available and it looks great, giving skins a reflective finish that looks really nice in motion.
Link to A320 reflections file
Here are two screens I took this morning that show the reflections..
And a short video by Ddenn showing what the reflections look like in motion on the Challenger 300...