More than VS2008 to VS2010, you should look at the move from framework 3.5 to 4.0.
This is where you would be getting new features "coding wise".
Visual Studio 2010 provides new tools and features that would help you code better.
However, coding wise new features are listed at
http://msdn.microsoft.com/en-us/library/ms171868.aspx[
^].