On the Scholastic blog, they had this to say:
The World of the Hunger Games is the official, richly illustrated, full-color guide to all the districts of Panem, all of the participants in The Hunger Games, and the life and home of Katniss Everdeen. A must-have for fans of both the Hunger Games novels and the new Hunger Games film! Written by members of the Scholastic editorial team who work closely with Suzanne Collins, all of the content in The World of The Hunger Games and the other official tie-ins has been approved by Suzanne Collins (who also has contributed some additional material of her own via interviews!).
We can’t wait!!!!
Great news to know that all the tie ins, including this one has all be approved by Suzanne Collins! We can't wait either!