Has anyone figured out how to decrypt the AC7 models yet?

I want to extract assets (specifically model data, level geometry, shaders and textures) to do artwork in Blender. Has anyone figured out how to extract the game files, or do we still have to wait until someone reverse-engineers the game engine?

When I extract the textures, I get png and dds files named whatever_maskset. Are they for individual RGB channels? How can I tell which are the specular, AO, metallic, etc?