Visual Studio 2010 and .NET Framework 4 Beta 1 is out and its absolutely free for you to use it and get an early glimpse of the final version of the product. Some of the major features are :
- Office Development in Visual Studio 2010
- Multi-targeting create an application that works even for lower version of .Net Framework even if you have developed it for high version.
- Parallel Computing
- Workflow Foundation
- Multi-targeted Silverlight development
- Editable design surface for Silverlight.
You can check out the video on Downloading and Installing this version of Visual Studio 2010 and Framework 4 here