Bill's been in hiding for many years now, I believe his last public appearance/communication with the community was around 2007, he's blanked all correspondence since, emails to amiga.com are unanswered, phone lines disconnected.
Good luck contacting or finding him, from anyone who wanted to develop, licence or sell Amiga products, emails have gone unanswered for years, except (oddly) CUSA...
I would bet that he's gone back to truck driving.