Any info about the foliage shaders used in "Way of the Hunter?" published by THQ?

Is anybody aware of any information put out by any of the team behind this game, specifically about the foliage shaders?

Best foliage I’ve seen anywhere so far.

There are many tutorials on Youtube to get similar animation of parts of the trees

Or for global wind modifiers based on a collection

As for the assets themselves realistic foliage in AAA titles usually uses speedtree.