From the New York Times:
Among the unlikelier announcements made at Wikipedia’s conference in Alexandria, Egypt, was the bold claim on Friday that the online encyclopedia was about to make history in print publishing: creating the book with the most credited individual authors ever — approximately 90,000.
The book with so many authors is the product of an unusual alliance – a single-volume encyclopedia produced by the German publisher Bertelsmann from the 25,000 most popular articles on German Wikipedia. The volume will have very short articles, no more than a few paragraphs at most, and include photos and illustrations.