The last revison of Silverlight Composite UI (SCAB) was published at Downloads page. It includes:

• New services: Trace and ScriptManager.
• Some bug fixes of WorkItem Register-Resolve logic.
• The project was upgraded to Silverlight 2.0 beta 2

Archive includes both Scab component and Ut1 application as example. You can view the work of application at Demo page.

By this time Scab project contains Modules, Services infrastructure. The development of Scab project is limited by the Beta version of Silverlight. Every new Beta brokes current implementation :).