I think it already happened - it was just an announcement that Japan is getting the movie on July 11th with the rest of the world instead of the usual delay.
So they write "tomorrow", like it's some big thing happening, just for it to be confirmation of a release date, when they just could have used that tweet to tell of the release date to begin with?. Okie dokie then. Well that was lame. Was hoping for another shot of supermans feet or another guy Gardner parting his hair with his finger clip or something. Way she blows
They also launched the Japanese website and official merch. So it was a pretty big deal for Japan. And their website is pretty nice looking.Well I think they also released the official Japanese poster (with said release date) and trailer, but they're the same as ours, so that's pretty much the gist, yeah.I think it was just marking the beginning of the film's promo in Japan.
www.superman-movie.jp