>>17396766No, Hoopa, Diancie, and Volcanion is a different story. You can't get them in-game, so it's justified why there might be some Pokemon players who don't know about them yet, thus an official reveal might make some degree of sense.
An "official reveal" of a Pokemon you CAN get in-game more than three months after said game has been released is really silly. Did they really think there were still people who didn't know about him yet?