Release Notes: This release marks a major milestone in the Yii framework development. It includes many new significant features to the already powerful Yii framework. It adds a PHPUnit-based testing framework so that developers can more easily write unit tests and functional tests. It adds a form builder so that commonly used HTML forms can be built in terms of objects and thus enhance their reusability. It adds support for changing skins for widgets globally. It modifies the way of performing relational ActiveRecord queries so that they are more intuitive and easier to use.