The good people at RC Mania have gathered a couple of photos of what appears to be a tail down Trex 500, more inside!
RC Mania picked up on this new lower tail setup for a Trex 500 in one of the usual Trex 700 prototype pics. It looks like Align is working on setting up lower tail 500s so the heli can work in more scale applications, such as a Blackhawk, Cobra, Apache, etc. We presume that they are also working on angled tail assemblies to go along withe these fuses as well. Below is the original pic the zoomed in 500 was taken from, as well as a pic from RC Mania of possible fuselages for this new lower-tail 500.
Source: RC Mania HK
There are lots of wiring in that model and its too hassle right if one of them is being damage due to heat factors that's why its good to have wire covers for those wires that can really absorb heat, in that way it will prevent any damages that can occur.