Laura Cohen has edited a new book, Library 2.0 Initiatives in Academic Libraries, published by ACRL. Aside from the interesting content, it promises to be an exciting publishing experiment. Although the entire book is not online, a wiki has been set up, with sections for each chapter, to enable discussion and feedback. This kind of networked book will likely become more and more common. It especially makes sense for academic books to foster this kind of communal reading. See the Institute for the Future of the Book and Book Glutton for other examples.
Guess what I wish the Cohen book had: a chapter on collection development! 🙂