Visual Studio LightSwitch is a new tool for building data-driven application in Visual Studio IDE. It automatically generates the User Interface for a DataSource without writing any code.
Microsoft released their first Beta of Visual Studio LightSwitch for the MSDN Subscribers. If you are a MSDN Subscriber, download it from the MSDN Subscriber Downloads Page. The expected date for the public release will be on Monday, 23rd August. Visit the Visual Studio Light Switch Blog for more information on it.