His official website is
www.sonnylandreth.com
Newest CD is Grant Street on Sugar Hill. I think it became available yesterday (1/25/05). Live recording, got very favorable write up in
Vintage Guitar March 2005 (which is out now)
Got to see him at a Denver Blues and Bones Festival a couple of years ago; him, bass player and drummer and a really tricked out guitar of some kind with a lot of effects eemingly built into guitar's controls.