I kinda missed the part where he talked about his latest novel… Zero History was originally published about a year ago (September of 2010) and it is now in mass market paperback. But, when you say "latest" novel it sort of means you're talking about the new novel that hasn't been released yet. Not the old novel that is being released again.

Although, now it appears the title has been altered? RSS says "William Gibson talks to BoingBoing about his latest novel"

Meanwhile, HN has "William Gibson talks briefly to BoingBoing about his novel, design & the web"

Color me confused..