(The official release of the Ruby on Rails 3 Tutorial book should happen some time in the next couple weeks, probably slightly ahead of the official Rails 3.0 release. Of course, the tutorial will also be updated after Rails 3.0 final drops.)
Just so you know, Rails 3 RC plus all the associated dependencies with rspec now core dump on integration ('requests') tests even though controller testing works fine. It looks like there is a webrat/rspec usage issue. I assume they'll get it fixed in a few days.
I'm glad to know it's not just me. The tutorial book pins RSpec down to 2.0.0.beta.18 for just this reason. (It looks like 2.0.0.beta.19 is the one that has the problem.) Of course, I'll update the tutorial with the latest RSpec version once they fix this issue.
While you're here :) I wanted to say that your book/tutorial is really well done. I was working through the 2.0 version and simply figuring out what needed to happen for 3.0. Thanks for the link to the 3.0 version. I'll let you know if I any problems or confusing parts.
http://railstutorial.org/book?version=3.0.0.rc
Shhh... Don't tell anyone! :-)
(The official release of the Ruby on Rails 3 Tutorial book should happen some time in the next couple weeks, probably slightly ahead of the official Rails 3.0 release. Of course, the tutorial will also be updated after Rails 3.0 final drops.)