Like most people here, I will not pre-order a Japanese version of B2/W2. I'll probably browse online for the new features, Gym Leaders, characters and any other additions that just couldn't wait, but I won't play the game. It's not because I wouldn't understand it, I just like these games in English more. That being said, I won't be pre-ordering an English version either. I don't have any means of pre-ordering at the moment.
I would love a poster or a figurine from the pre-order, sure, but that doesn't change anything. I'm still going to be broke and unhappy.
Besides, I can wait. I'll earn money, then I'll buy them.