The features and improvements supported in this release are:
Relationship Links: The WCF Data Services client and server libraries have been extended to represent the URIs that allow the client to address the relationships between related entities
Multi-Value properties: The WCF Data Services client and server libraries have been extended to represent small unordered groupings of non-nullable primitive or complex types
EntitySet Resolver: Previous versions of the WCF Data Services client library assumed that all entity sets reside under the same service root. This release updates the client library to allow the client to resolve entity sets to different URIs