They Sync team has just published a CTP release of Sync Services for ADO.NET on Devices.
This continues our commitment to deliver a consistent programming and sync story for all Microsoft clients using SQL Server Compact. The download page includes a sample, and readme.
For feedback on the CTP: http://forums.microsoft.com/MSDN/ShowForum.aspx?ForumID=1225&SiteID=1
Thanks and please let us know if this is the right bar for 1.0, what we must fixt before shipping, and what you'd like in V2,