Is the script for the definitive edition still being worked on?

anyone have a clue as to how they blend textures? for instance this is the default textures without the other texture blending over it: https://i.imgur.com/CkUyrSA.png where this is the intended look from the game: https://i.imgur.com/mPfvPxE.png they do this for a lot of textures so if anyone has a...

sorry if this is a noob question, but how do you know what textures the objects use? specifically the walking dead a new frontier's environment models or whatever they're called