I don't nderstand very well the scope of your question...
But here are some comments.
That wing is in accordance to the box wing concept and it's intendet to dramatically decrease the induced drag of the wing. The idea is not new since there were many attemps and studies on that configuration but (and I don't know why) no model was developed comercially. Another configuration with that basis is the joined wing, also with the same aerodynamic scope.
In both configurations, structure takes also a lots of benefint since its weight decreases substantially... Check AIAA-85-0274 and NASA contractor Report 4004
Regards
Guille