Even so, if you're still developing in Visual Studio 2003 and .Net 1.1, it is a good idea to understand what changes are incorporated into .Net 2.0 and how they might have an impact on your migration path from .Net 1.1.
Around the 2nd week of February 2006, we announced a formal list of breaking changes in .Net 2.0 when compared to .Net 1.1. Included in this are both design time (VS 2005) and runtime behaviors (CLR/.Net 2.0).
No need to duplicate, all the info you need is here:http://msdn.microsoft.com/netframework/programming/breakingchanges/default.aspx
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