is an article that explains all changes made to the Q3 version of the control. Note that this blog post explains changes from Q2 to the beta release. We have also changed some things from the beta onwards, the ItemWidth and ItemHeight as well as the ContentType has been removed. If you want to set the Width and Height of the items, you should define them in your ItemTemplate or through a style assigned to the ItemContainerStyle. Here
is also an explanation on how to implement the missing navigation.
If you have any questions concerning our new functionality, or anything else related to our Silverlight control, please contact us as soon as possible.
the Telerik team