If you are an experienced Joomla! 1.5 user, this Joomla! site will seem very familiar. There are new templates and improved user interfaces, but most functionality is the same. The biggest changes are improved access control (ACL) and nested categories. This release of Joomla! has strong continuity with Joomla! 1.6 while adding enhancements.
In Joomla 1.5 and 1.0 content was organized into sections and categories. From 1.6 forward sections are gone, and you can create categories within categories, going as deep as you want. The sample data provides many examples of the use of nested categories.
All layouts have been redesigned to improve accessibility and flexibility.Â
Updating your site and extensions when needed is easier than ever thanks to installer improvements.