Autodesk FormIt 360 update released! Layers, scenes, materials, and Autodesk Revit add-in. http://autode.sk/FormIt_Update
This update and continuous additions of features to the Autodesk FormIt 360 (free or paid versions) is really huge news for those that need to do conceptual designs and when ready move right to the design in Revit instead of the traditional sketchy conceptual tool then redo it all from scratch to get it into Revit