You can find their original announcement here and this link at Microsoft tells you much more about Refactor! itself.

With the availability of new C# refactoring functionality in VS.NET 2005, Microsoft seem to have noticed the lack of similar functionality for Visual Basic developers. That's why a cooperation was struck up with Developer Express for them to offer their fantastic DXCore-based refactoring product in a free version to VB.NET 2005 developers.

There's lots of additional information on Refactor! available at the Developer Express website, also about the Professional version (which also works with C#, very recommended!) and the companion (parent?) product CodeRush for VS.NET. A white paper has been made available about Refactoring in Visual Basic .NET 2005 that's really worth a read.

The free download of Refactor! for VB.NET 2005 is available here: http://www.devexpress.com/vbrefactor

There are three ways to get support for this version of Refactor!. You can contact the Developer Express support directly at support@devexpress.com, the Visual Basic IDE Forum at Microsoft's is open to questions and suggestions at http://forums.microsoft.com/msdn/showforum.aspx?forumid=65 and finally Developer Express have opened a newsgroup called devexpress.public.dotnet.refactor.vb on their news server (you can find all the information you need to get connected to the news server at http://www.devexpress.com/Support/Newsgroups.xml.)