Beta 2
Beta 2 of Agile Web Development With Rails, Edition 4 is now available. Over 100 comments were addressed from over 30 individuals. Special thanks go out Trung LE, David Hadley, Manuel E Vidaurre Arenas, Wayne Conrad, and Steve Nicholson.
If nothing else, the number of copy/edit changes that have been identified should give an indication of the scope of changes in this edition. This is only partially due to Rails changes; the book has also been updated to reflect current best practices, and has an increased focus on people new to Rails (and perhaps even Ruby).
This beta adds coverage of sending email and integration testing. I’m continuing to keep on top of Rails and Ruby changes, and am opening bug reports on what I find.
At the present time I do not recommend using Ruby 1.9.1 with Rails 3 betas.