Based on popular demand, today the ALM Rangers released an update to the WCF Load Test tool. Apart from some bug fixes, the main difference is that this version integrates with Visual Studio 2010 Ultimate Edition. After this release, the Rangers plan to convert the code to .NET 4.0, so future releases will only work with Visual Studio 2010 or later.
Please post your feedback on the Codeplex Discussions tab. You can download the release here.