Yeah, there were some posters for that too. It is actually a remake of an old anime movie Shinzo Ningen Casshern, but done in live action. It won't be an exact adaption, just like taking the concept and going in a little bit different direction with it. Like what Tim Burton did with Planet of the Apes.

It doesn't look like a bad movie, but I would rather see Devil Man. That just looks amazing.