Starting this week and running until September 7, 2015, Final Fantasy XIV will run the "Rising" event, complete with rewards and a few "guest appearances." The items include two minions, and celebratory fireworks.
The event is being held to "reflect on the Calamity" (an in-game event), and to fend off the festivities from a "terrible insect infestation." It will be held in Ul'dah, the Steps of Nald, at the coordinates 10, 10.
Again, I love that Square Enix holds events like these, and heavily injects lore into them -- it's a good excuse to get back into the game.