No there were posters up about Hawaii when Worlds was in Anehiem, but I was very dissapointed that there was nothing up at Hawaii about worlds the upcoming year. Word did get durring the worlds championships in Hawaii that the next years Championahip was going to be in Orlando, but there was not an offical announcemet that it was going to be in Orlando at all.
What more official do you want, than the 7 promo set + 2 cardboard cards given out to participants saying it'd be in Orlando...