Microsoft released the Service Pack 1 for Visual Studio 2008 yesterday.

Visual Studio 2008 SP1 delivers:

• Improved WPF designers
• SQL Server 2008 support
• ADO.NET Entity Designer
• Visual Basic and Visual C++ components and tools (including an MFC-based Office 2007 style ‘Ribbon’)
• Visual Studio Team System Team Foundation Server (TFS) addresses customer feedback on version control usability and performance, email integration with work item tracking and full support for hosting on SQL Server 2008
• Richer JavaScript support, enhanced AJAX and data tools, and Web site deployment improvements

The complete release notes can be seen here:
http://msdn.microsoft.com/en-us/vstudio/products/cc533447.aspx