During the demonstration I have noticed that two major methods of DataContext has changed from Beta 1 to Beta 2.
First one, is the new name for the class DataShape(). Now there is no class called DataShape() but we have DataLoadOptions().
var loadOption = new DataLoadOptions();
loadOption.LoadWith<Customer>(c => c.Orders);
db.LoadOptions = loadOption;
DataContext does not have any method called GetQueryText() it got changed to GetCommand().
Please let me know if you find something else. I will update this entry.