April 2012 Update for Visual Studio 11 Beta is available.
For Visual Studio 11 Beta Ultimate, You can install it through Tools->Extension Manager:
For Visual Studio 11 Express Beta for Web, you can download it directly and install: April 2012 Update for Microsoft Visual Studio 11 Beta. Due to a known issue, it won’t show the update in “Visual Studio 11 Express Beta for Web” extension manager, if other versions of Visual Studio 11 Beta is not installed on the machine.
The update contains a fix for the razor editor issue. Please read release notes for details.
Web Platform and Tools