Microsoft today released the much anticipated… okay, much anticipated by me and other developers… Service Pack 1 for .Net 3.5. Along with this is the Visual Studio 2008 SP1.
Improvements to .Net include Dynamic Data, WPF performance boost, the Entity Framework, ADO.NET Data Services (one of my personal favorites), and more.
On the Visual Studio side, there are additions for SQL Server 2008 features, Local Database Cache enhancements, the Entity Framework Designer, WPF Designer modifications, and much much more.
One side note- the installers each take a while even with 4GB of RAM installed. Be prepared to shut down your running apps, which sucks, and wait a while.