"World of Warcraft" 7.1.5 update's patch notes have just been released today. However, fans will have limited access to the massively multiplayer online game, as Blizzard takes it offline for 4 hours of maintenance.

Blizzard is currently updating the back-end of the game and "World of Warcraft" servers will be offline for maintenance, according to Express. The "World of Warcraft" maintenance will last for four hours, commencing at 7 am Pacific Standard Time and ending at 11 am PST. For the UK fans, the game will be offline from 3 pm until 7 pm.

The massive patch brings a load of changes. It presents a host of new features, including new bonus events and the return of the Brawler's Guild.

New Bonus Events

"World of Warcraft" 7.1.5 update includes a New Bonus Event dubbed Mists of Pandaria Timewalking. For players at level 91 and higher, there will be a new Bonus Event every several weeks. For Dungeons, events included are Temple of the Jade Serpent, Stormstout Brewery and Shado-Pan Monastery. Other events include Siege of Niuzao Temple, Mogu'shan Palace and Gate of the Setting Sun.

The New Timewalking Vendor on Timeless Isle is now offering Reins of the Heavenly Jade Cloud Serpent (Yu'lei, Daughter of Jade mount), two new pets with Infinite Hatchling (dragonkin) and Paradox Spirit (aquatic). In addition, there will be Reputation Tokens for all major Pandaria factions and friendship items, two new Toys namely Adopted Puppy Crate and Portable Yak Wash. Chilled Satchel of Vegetables, to help chefs who have missed out on Pandaren cuisine, and updated equipment selections from Pandaria factions are included as well in the "World of Warcraft" 7.1.5 update.

Brawler's Guild Is Back

"World of Warcraft" 7.1.5 update brings back everybody's favorite. It introduces a new set of stimulating encounters and it is up to you to power your way past them for prizes and glory. New solo boss fights include Master Paku, Ash'katzuum, a Seagull and Ogrewatch. Other boss fights include Ray D. Tear, Johnny Awesome, Burnstachio and Stitches. Rewards are numerous including the Brawler's Burly Basilisk mount, new shirts and achievements, Tylarr Gronnden (new battle pet) and Pugilist's Powerful Punching Ring, which transports you to Brawl'gar or Bizmo's.

Updated Features

"World of Warcraft" 7.1.5 updates Artifact Knowledge and Class Hall and features the new Bind-on-Account items, which are now available from the Artifact Researcher in your Class Order Hall. These items can be sent to substitute characters to directly get them to higher Artifact Knowledge levels. In addition, the Legion Companion App has been updated to support "World of Warcraft" 7.1.5 update, along with bug fixes and functionality improvements.