The official source of information on Managed Providers, DataSet & Entity Framework from Microsoft
Visual Studio 2008 SP1 introduces significant new functionality as ADO.NET expands and evolves to change the way that we program against data.
Between the Visual Studio 200 SP1 beta and RTM , there are a number of fixes and even a few new things to be found. What's in ADO.NET? Check out the list below for what's new in the Entity Framework and Entity Designer.
Entity Framework Runtime
Between the last beta and RTM we fixed well over 200 bugs across multiple areas in the Entity Designer. Most notably, the undo/redo performance for common operations (e.g. creation and deletion of entities) and “Update Model from Database” performance have been significantly improved. Here’s a bird’s eye view of some of the other things we’ve made better: