The Windows Installer XML toolset v2.0.1615.0 has just been released. Lots of small bug fixes, a little more documentation, and a couple examples added to the sources. More fixes to come in the future. The Windows Installer XML (WiX) is a toolset that builds Windows installation packages from XML source code. The toolset supports a command line environment that developers may integrate into their build processes to build MSI and MSM setup packages.