With every release of Visual Studio, all of the plugin’s need to be updated and released. Over on Ilya Ryzhenkov (ReSharper Product Manager at JetBrains) blog he has posted information on the Early Access Program (EAP) where you can download nightly builds of ReSharper.
Via the EAP, they have released ReSharper 3.0.2 which includes support for VS 2008 (Orcas) Beta 2.
Remove any existing installations before installing.
However, ReSharper doesn’t play nicely with C# 3.0 and Linq and the only way to turn it off is to disable the plugin, which also displays it for C# 2.0 which works.
Hopefully they will support it soon. I wonder what DevExpress are doing this C# 3.0….