The team posted 3 new screenshots on their Facebook page, where we can see the results of using PBR (Physically Based Rendering) on the helicopter rotor system, which vastly improves the looks of a model and creates the illusion of having different materials, such as metal, plastic, etc.
The helicopter is still in development and we use our free time intensively to finish it. With the new PBR materials we could finally implement material definition graphically and we think that the current effort was worth it.
There's still no date of release, so we'll have to be patient and wait as DHS does their magic.