Today marks the beginning of the week-long Harvest Festival, a minor World of Warcraft event that lets players celebrate the memory of their faction's fallen champions. You can grab some food from the tables outside Ironforge and Orgrimmar and purchase some fireworks. There's also one quick quest to complete for each faction that asks you to honor the memory of Uther Lightbringer or Grom Hellscream.
If you're patiently waiting for the next major world event, Brewfest kicks off on September 20! The rest of the year continues to be eventful with Hallow's End in October, Pilgrim's Bounty and WoW's seventh anniversary in November, and the Feast of Winter Veil in December.