ADO.NET Synchronization Services

I've just attended a session about Smart Client development with Visual Studio Orcas. One of the most interesting new features are Synchronization Services, because you can leverage SQL Server Compact Edition 3.5, to manage offline data cache, with automatic synchronization with a backend SQL Server. Sounds a good idea, by the way I'm wondering if there's a way to enpower this infrastructura with entities rather than with DataSet and typed DataSet.