As we all know Visual Studio is now supporting Database project, which allows you to write query, procedure etc... from IDE only.
Recently I found the error while connecting SQL2008 from VS2008.
This server version is not supported. Only servers up to Microsoft SQL Server 2005 are supported.
I found after doing some googling; that there is no patch available which allos me to connect SQL2008 to VS2008!!!.
I found few comments which says that it will come soon.
Euan Garden's BLOG
However there is Sservice Pack for Visual Studio 2008 Team Foundation Server which has ability to Support for SQL Server 2008, you can download that form Microsoft Download Center
Let me add that there is Service Pack for Visual Studio 2005 Support for SQL Server 2008, which you can download it from Microsoft Download Center
19 hours ago