I personally have encountered only one bug in this beta that has yet to be resolved. For some reason, after I installed the Silverlight 2.0 runtime and SDK, I could not debug the Silverlight projects. I'm not sure if this is a 64-bit issue or an installation problem; I expect that the problem will go away at some point, probably when I install a newer version of the Silverlight tools.

In any case, I'm looking forward to the incremental drops of add-ons to the Visual Studio 2010 beta and to the next beta. It's good now; I expect that it's going to be great by the time it ships.

Visual Studio 2010 Beta 1 is a very promising upgrade to the premier IDE for .Net development. It improves the UI, IntelliSense, and Designers; supports parallel programming; and improves support for test-driven development. It's still missing support for ASP.Net MVC and smart devices.