ComputerWorld has a great short interview with mathematics professor and science-fiction author Vernor Vinge (yes, he's one of Tor's) on the coming technological singularity. Not too in-depth, but a nice quick rundown of main themes. The article also links to Vinge's seminal 1993 manifesto, The Coming Technological Singularity: How to Survive in the Post-Human Era, a short but fascinating piece of speculation.
I actually just finished reading Vinge's latest novel, Rainbow's End, a great vision of a near future where the singularity is in its early bloom. I highly recommend it, it's a great read.