Found this while discussing the lack of BH6 representation. It's official because it's one of Disney's sites. Some of this merchandise hasn't been seen yet, as far as I know.
"... with a purchase of any two bottles of Langers juices plus $4.99 shipping and handling." This is the same kite that was given away atDisneyland's Tomorrowland preview. This is legit, as per BH6 facebook page.
In Japan, the film is called "Baymax" (ベイマックス). This link will search "ベイマックス" on Disneystore, showing all of their products. When their December release date gets closer, and they create a page, I will link to that instead.