The official source of product insight from the Visual Studio Engineering Team
As of this week, Visual Studio 2010 SP1 is now available for download! The service pack was released to MSDN subscribers on March 8 and became generally available on March 10. SP1 includes fixes that improve reliability and address the most commonly-reported customer bugs. It also adds some of the most requested feature improvements, including a new local help viewer, IntelliTrace support in more scenarios, and built-in Silverlight 4 tooling.
For more information, check out the following blog posts and links:
The Visual Studio Professional Team