And Boubouille at MMO Champion has even more word on the three loot cards that will be released with the set. UD hasn't officially announced what they are (though not for lacking of trying on our part-- WoW Insider is doing our best to get an official announcement on what loot cards will be available), but it looks like, according to code in the game client, that those items we originally thought were more toys for engineers are actually the loot items-- a dragon kite, a robot chicken, and a paper gyrocopter. Bou even discovered a spell for the dragon kite that says "Upper Deck" right there on it, so this is about as sure a confirmation as they come. March of the Legion, and the new loot cards, all drop on November 17th.
Update: Well there you go. Upper Deck apparently didn't like the leaks, and went ahead and confirmed all three loot cards. Look for a dragon kite, a paper airplane card, and a robotic homing chicken in a new deck near you.