LINQ to ADO.NET includes:So long DLinq and XLinq... Welcome Linq to Whatever!
LINQ to DataSet
LINQ to Entities
LINQ to SQL (formerly DLinq)
LINQ support for other data types includes:
LINQ to XML (formerly XLinq)
LINQ to Objects
I agree that this will make things a bit more explicit, especially the separation between what is related to ADO.NET and what is not. It will also help implementors find names for their products using Linq. We can expect to see more LINQ to Something in the future...
Cross-posted from http://linqinaction.net