Rob Mensching recently posted an item on his blog indicating that the WiX toolset will not be shipping in Visual Studio 2010 as originally planned.  In a follow-up post, he outlined a proposed roadmap for WiX v3.0 and v3.5.  To briefly summarize his post, the proposed WiX roadmap looks like the following:

• Lock down WiX v3.0 and release it in July 2009 with the core toolset, extensions and Votive support for Visual Studio 2005 and 2008
• Follow up with a WiX v3.5 release that includes Votive support for Visual Studio 2010 and the new chainer/bootstrapper (code name Burn); ship WiX v3.5 when Visual Studio 2010 ships.

As part of locking down WiX v3.0, the v3.0.5217.0 build was declared release candidate 2 about a week ago.  If anyone reading this is working with WiX v3.0, I encourage you to upgrade to the RC2 build, try out your scenarios and report any issues you see on the WiX SourceForge bug reporting site in order to help the WiX virtual team lock down and ship WiX v3.0.