Rishi,
The ADO.NET team is targeting August 2006 for the first Linq to Entities CTP. It is still early enough in the cycle that we’re not yet committing publicly to a particular release of the framework. Once we’ve had a chance to get some feedback from a broad set of customers through a CTP or two we’ll be in a position to be more precise on release timing. In the meantime, we’re very excited to start sharing more details with you on what we believe will be a significant advancement in the way developers work with data. Keep an eye on http://msdn.microsoft.com/data to track this effort and let us know what you think of it.
Lance Olson, Group Program Manager, ADO.NET Team