http://blogs.msdn.com/aaronmar/archive/2009/06/24/visual-studio-2010-user-interface-guidelines.aspxOne of the things you may notice is missing from the Visual Studio 2010 Beta 1 SDK (compared to 2008) are the user interface guidelines. You can now find the Visual Studio 2010 User Interface Guidelines at the following location: http://code.msdn.microsoft.com/VS2010Uen-USCommunityServer 2.1 SP1 (Build: 61025.2)