A few weeks ago, WiX Toolset v4-preview.0 was released. Rob’s blog post announcing the release is currently the best documentation available on how to try it out. Bob is also adding some details at his blog.

For most of the 8.5 years since the branch was created for v4, I have been making more than my fair share of breaking changes across the toolset. In future blog posts, I will highlight these breaking changes and try to explain how to address them.

  1. WiX v4 Breaking Changes - Referencing Built-in BootstrapperApplications

  2. WiX v4 Breaking Changes - Bundles Respect -arch