Hi Everyone,
As promised, here is the link to download the free trial version of LumenRT. For CityEngine users, I would recommend the LumenRT GeoDesign Trial which has a direct interface to CityEngine 2012, 2013, 2014, and 2014.1
Here is the link:
http://www.lumenrt.com/download/
Also, we just uploaded a new video that highlights more of the high-end GeoDesign Communication capabilities of LumenRT here: