The Visual Studio SP1 beta just became available. I’m tempted to give it a try, since it apparently contains quite a few fixes and improvements. I haven’t had any specific issues with VS2010, so I’m not certain what I’d get out of it right now.
A query to those in the know: what specific improvements in SP1 will you be benefiting from?
well
Unit Testing on .NET 3.5 (it was for .net 4.0 only)
Performance Wizard for Silverlight
& intellitrace for sharepoint projects is all i can remember now