High Max was the one who could most reliably get into contact with him... don't know how, exactly.
Noise was going to serve in the military, IIRC, which of course puts a hamper on any modding efforts for a while. As it is, Hammer Falls was an early leak of the second part of Chapter 5, not the full campaign.
As of his last update (which, mind you, was a long time ago), he had mostly finished Chapter 5, and had work on Chapters 6 and 7 started. There was a general story outlined on his website for a full 12 chapters.