As long as the official site gets updated soon enough, I don't see the issue. Medias/external sites create some buzz, then the official site gets updated. It's not because people who visit the official site doesn't have the latest bit of information right away that it's going to be a big deal.
The game is still far from being released, and if someone is so eager to get all ARR info as soon as they are made available, then that someone will most likely read up external sites/forums and won't just check Lodestone/Official Site.