The Azeroth Choppers webseries ended as most expected. In a battle of faction pride, the Horde is going to come out on top every time. Of course, it probably didn't help that the Alliance bike looked like some kind of gross beetle, but that discussion is probably best left in the past. As the winners, the Horde will receive their faction-themed bike come Warlords of Draenor. However, a stipulation was announced last night: to flag your account to receive the mount, you must log into the game between now and September 30, 2014.
For the sake of clarity: you can claim your mount right now (and need to do so before September 30) but you won't receive it until Warlords of Draenor's launch.