WPF, Silverlight Out-of-Browser, and Windows Phone 7 all have the ability to work in a disconnected/offline mode since they all can be often consider client applications. The idea here is for the ArcGIS Silverlight/WPF API to fully support this offline/disconnected ability in Sliverlight, WPF, and Windows Phone 7. Therefore, a user can make edits while offline/disconnected and when they become connected again these edits would then update back to the Server's geodatabase.