That's right, SP1 for Visual Studio 2008 and .NET Framework 3.5 went live today. You can read about the highlights here, or just go download the service pack and check it out for yourself. WPF designer support in the IDE and WPF performance increases in the framework were big items delivered in this service pack. Also included is the ADO.NET Entity Framework, ADO.NET Data Services, and support for SQL Server 2008. This release comes on the heels of the release of SQL Server 2008 just a few days ago.