To keep informed about how the Daylight Saving Time change impacts developers and Visual Studio, follow the Visual Studio and Daylight Saving Time Change page on MSDN.
In 2005, the United States government passed the Energy Policy Act of 2005. This act changes the start and end dates for Daylight Saving Time (DST) as of spring 2007. These changes may impact the way applications run. Microsoft is releasing an update for Windows through Microsoft Update that reflects these changes.
For more information, see Preparing for daylight saving time changes in 2007.