Visionaire 56 SOLAR uses an innovative printing technique that transforms black & white images to color when they're exposed to direct sunlight. Some samples:Inez van Lamsweerde & Vinoodh Matadin
Richard Burbridge
Alex Katz's painting of my former Visionaire cohort and buddy Kyra Griffin

Looks cool, I'm excited to see it in person. Other contributors include Yoko Ono, M/M (Paris), David Sims, Olaf Breuning, Glen Luchford, Mario Sorrenti, Ryan McGinley, Peter Lindbergh, and more. Go here for more images/info and to pre-order a copy.