For those of you who missed it, JetBrains officially released ReSharper 4 last week. A list of new features can be found here. Most notably is full support for C# 3.0 and LINQ, but there are improvements in lots of other areas. (I’ll point out these improvements in the Becoming a Jedi screencasts. I’ve got an episode planned all around the new C# 3.0 features, which should surface in the next few weeks.) New keymaps for both the Visual Studio and ReSharper 2.X/IDEA schemes can be found here. Congratulations to the entire JetBrains team for getting this release out the door! If you haven’t tried ReSharper 4, you owe it to yourself to take it for a spin.