Found yesterday a concept of a modern cargo windjammer, with dynarig system that successfully proved itself on a yacht
Maltese Falcon:
http://fairtransport.homestead.com/Ships.html
http://www.gdnp.nl/
It says (http://segelreporter.com/blog/2012/02/17/geplanter-oeko-frachter-aus-holland-ecoliner-soll-mit-dyna-rigg-segeln/) they plan to launch such ship some when in 2013. Will see!