What features are people looking forward to in .Net 4.0 - 4.1

Question

I am very interested in learning what features people are interested in in the forthcoming .net framework(s)?

Whether these be new classes or new controls I am curio

Answer 1

The Visual Studio 2010 code editor being pure WPF and being able to be docked on either monitor, and addins not using the nasty Office COM object model (EnvDTE).

I know that's not the framework but the question has been tagged VS2010