From Rails 2.3 to 3.0 – The H Open Source: News and Features: In this, the first of two articles leading up to the release of Rails 3.1, expected on 30 August, web applications engineer J. Austin Hughey discusses the changes made and new features that were added to Rails between versions 2.3 and 3.0. In the second article he will discuss the new features and improvements coming in version 3.1