The first interim build of WiX v3.10 has been released: WiX v3.10.1124.0 from wixtoolset.org. It includes support for integrating Votive into Visual Studio 2015 Preview and native and managed libraries for VS2015.
And that’s most of what we intend to accomplish with WiX v3.10. We will — of course! — fix bugs and add some small features in WiX v3.10 but the focus is on supporting Visual Studio 2015 and, if necessary, Windows 10. Rather than filling the available schedule with work, the goal is to finish the planned work quickly and be ready to ship WiX v3.10 as soon as possible after Visual Studio 2015 ships.
To do that, WiX v3.10 won’t include any large new features, to reduce the risk of long bug tails. We’ll release milestone builds around new milestone builds of VS2015 to make sure changes in VS2015 are reflected in WiX v3.10. Bug fixes and small features are welcome and a few are already queued up in pull requests on GitHub. More are welcome! Let’s talk on wix-devs.