Ruby on rails
1 Upgrading to Rails 3.1 If you’re upgrading an existing application, it’s a great idea to have good test coverage before going in. You should also first upgrade to Rails 3 in case you haven’t and make sure your application still runs as expected before attempting to update to Rails 3.1.
Hi everyone, Rails 3.1.0.rc8 has been released (we've an issue with rc7). This is the final release candidate. Please give it a try, it's our last chance to fix regressions and severe issues.
Learning Rails the Zombie Way