The RTM-Preview version of the Feature Builder Power Tool for Visual Studio 2010 has just been posted to the Visual Studio Gallery.
These bits are compatible with the RTM release of Visual Studio and will also run side-by-side with the upcoming Visual Studio 2010 Feature Pack.
Here is the “read me” information for this release:
Welcome to the Feature Builder Power Tool for Visual Studio 2010 RTM-Preview:
Support for the Feature Builder is available on the Visual Studio 2010 Visualization and Modeling Tools Forum