This is created mid 05 so the bulk of discussion will be on the MicrosoftDotNet that applies to VisualStudioWhidbey or beyond. Earlier versions can be better described as "learning editions".
Nov05 reports reaffirms the statement -> Next version of the (DotNet) Framework is to be incorporated within WindowsFx (WinFX).
MS refers to it as the OO & managed API for the breadth of windows.
I reckon even after WindowsLonghorn becomes a real product, there are times people would be interested in how things were during early days of DotNet. An example being people being asked to consider either migrated (or enhanced) earlier DotNet developed applications.