I make extensive use of Faces in iPhoto to build smart albums that include every photo I own with a given set of people in it. I find this really handy when I’m trying to find a specific photo in a sea of nearly 8,000 shots in my library. And although I’ve never purchased a photo book from Apple, I plan on doing so with the photos taken at my wedding next year. I suppose I may have overlooked it in the past, but up until yesterday I hadn’t seen any confirmation that Apple’s new Photos for OS X was going to include both of these features. I’m glad to finally know for sure.