VS11 Express Beta for Web added TFS support which including all of the TFS client features, such as source control, team explorer tool window, work item etc. It works with TFS 2010, Visual Studio 11 Beta TFS, and http://tfspreview.com/.
With VS11 Express Beta, you can create a unit test project into an existing web solution. Unit test explorer is fully functional to run unit tests and view results.
MVC4 Beta templates are included in VS11 Express Beta for Web as well. When creating a MVC4 beta project with default templates, unit test option is disabled due to a known issue. To work around it, one can add the unit
test project manually, or get it automatically created from VS2010, VS11 Beta and open it with VS11 Express Beta for web.
Enhanced web development features
Visual Studio 11 Express Beta allows the project and website to target .NET framework 4.5 or 4.0. Developers should feel more freedom to choose the targeting framework with this release.
source : msdn blog