You're right about the Dolphin mistake Polovski, they're pictured the S.E.5 instead, and they've got the Nieuport experimental triplane pictured for the N17.
The unofficial site now has an active Hangar section too, which has nicer artwork that you can click on for closeup viewing, and more complete descriptions of the featured planes.
I think we may be seeing the two seperate platform websites for the game (Xbox vs. PC).
Hopefully the forum on the unofficial site will go online soon so we can make suggestions for improving this already stunning looking game!