Wikisat has some interesting (but low rez and not expandable) images of what appears to be a wing for a flying, reusable first stage.
"I hate the thought that 80% of any rocket is not reusable. Hence, I decided to start to design a 2-stage -winged launcher. On the two pictures you can see the lower left half from two different perspectives. I try to lower the Cw as much as possible and to include the fuselage as aerodynamical element."
Space prizes is a blog that has frequent updates about progress in this and other competitions.
If you are new to the N prize, here is where it all got started over at Half Bakery.