I didn't read the whole article because it really didn't interest me, but basically some little girls are in competition and the winner will "walk down the red carpet at the Tokyo premiere of the upcoming live-action adaptation of Disney’s animated classic “Beauty and the Beast.”". One of the little girl said: "Emma Watson will be there and it will be awesome."
The article didn't give a date for the premiere but it'll be after March 22. So did the little girl assume Emma will be there because it'll be the premiere of her movie or is it because it's official that Emma's going? Your guess is as good as mine.
Also, the Australian premiere will be on March 9 in Sydney. (thanks to Rafael on Twitter)