WiX v3.5 now supports Visual Studio 2010 RC
Over the last week and a half, the Visual Studio team that contributes heavily to the WiX toolset put the finishing touches on Votive to support Visual Studio 2010 RC. Want to use WiX in VS2010 RC? Download the x86 or x64 Wix35 MSI from here: http://wix.sourceforge.net/releases/3.5.1419.0/.