Questa è una grande notizia... così finalmente si potranno buildare con Team Build anche i progetti di setup senza ricorrere a plugin esterni... 
Rob Mensching writes:
Also in 2005, the Visual Studio team approached the core WiX development team about replacing their custom MSI build system with the WiX toolset. Derek was at every meeting with me. Together we answered their questions, discussed timelines and feature requests and ultimately convinced the Visual Studio team to bet on WiX v3 for their next release of Visual Studio. Without Derek's experiences integrating WiX into Office, I'm not sure we could have convinced Visual Studio to pick up the WiX toolset.
Fonte: WiX v3 in Visual Studio!