The Silverlight PivotViewer has been released for download.

Conceptually, a collection is just like any other web content. There’s a set
of files on a server, and a local client that knows how to display them. In the
current web, the files are traditionally HTML and images. In the collection
case, the files are CXML and Deep Zoom-formatted (DZC) images. When the user
browses the collection from a web page, the PivotViewer will use the Silverlight
Control to display the files. See the following figure.

The Silverlight based PivotViewer is now available for you to begin building and embedding your collections directly onto your webpage. A Pivot collection consists of a set of DeepZoom images and metadata that describes the relation between these entities.