Reading Kohana\'s documentation, I found out that the main difference in 3.0 version is that it follows the HMVC pattern instead of MVC as version 2.x does. The page about t
Sam de Freyssinet (one of the Kohana developers) wrote a rather in-depth article about HMVC, what it is, and how it can be used.
Link is dead: New Link - https://web.archive.org/web/20160214073806/http://techportal.inviqa.com/2010/02/22/scaling-web-applications-with-hmvc/