Inoue's been missing for a couple of years or more now. Phonaut's post on it from 2012: http://phonaut.wordpress.com/2012/06/21/where-is-tetsu-inoue/
The last paragraph explains why Phonaut would be one of the people to likely know and be concerned.
I thought I saw a mention of Thom Brennan somewhere - but I can't recall it now.
Steve Roach is alive and well. And planning more releases. He decided to take a few days off after Bloodmoon before forging ahead.