Here's a recent audio interview (starts at 4 minutes in) with Pearl Thompson and Lisa Johnson of the 108 Rock Star Guitars book. Not much Pearl, mostly Lisa, but better than nothing. (Thanks Alex)
And it sounds like Pearl has some new material coming out. Lisa posted this on Facebook: "Truly
an EXQUISITE performance by Pearl at the 108 Rock Star Guitar Book
Launch event!!! You are all going to LOVE his new material."