For those like me who wondered why this was posted since the book content was out of date: The Django Book project needs help updating the book to cover Django 1.4 and beyond. Send pull requests to https://github.com/jacobian/djangobook.com
Do you know if there's an issue tracker or list of topics that need work anywhere? I'd be interested in contributing, but I'd rather not scan the whole text for things to fix (and risk duplicating effort with others)