Are you interested in the future of .NET? The site http://www.netfx3.com/ is a great resource for all things new in the 3.0 world.
Remember 3.0 is not a base framework update it just adds the WinFX components check out http://msdn.microsoft.com/winfx/ for more information.
Disclaimer The opinions expressed herein are my own personal opinions and do not represent my employer's view in anyway.