It appears that this tool has come out of the Building side of the company rather than civil/infrastructure.
Check out the video!
I downloaded and installed the free trial here. It plugged right in to Civil 3D 2014. I couldn't figure out how to get to it until I read the Preview Guide document that came with the install. There I discovered that it's all done through a right-click menu.
It's definitely building-oriented:
Please comment if you've worked with it and can share anything the rest of the world would want to know.