The extensive additions include:

–        New Battleground: Deepwind Gorge

• In the new Battleground situated in the Valley of the Four Winds, the Alliance and Horde continue their war for Pandaria’s precious resources. While the two factions battle for control over mines, they must also protect their own resources from being stolen and turned against them!

–        New Arena: The Tiger’s Peak

• Gladiator hopefuls have a new location to test their mettle amidst the Kun-Lai mountain tops, in the training grounds of the powerful Shado-Pan. Players must make use of the looming tiger statues and fenced platforms to gain an advantage that will bring victory and glory!

–        New Scenario: Battle on the High Seas

• Help your faction fend off enemy forces in the midst of a battle for naval supremacy on the High Seas.

–        New Scenario: Blood in the Snow

• An agent of Zandalar has infiltrated Dun Morogh and rallied the Frostmane trolls. At Varian’s request, Moira will lead her personal guard against them once the king’s champions have stopped the magical storm protecting Shimmer Ridge.

–        New Scenario: Dark Heart of Pandaria

• Goblin engineers have been excavating in the Vale of Eternal Blossoms to find a mysterious artifact, but all they’ve found is trouble; you have been personally called upon by the Warchief to aid them in their hour of need.

–        New Scenario: The Secrets of Ragefire

• Infiltrate the Emberdeep Caverns and assist the Gob Squad in investigating a recent disappearance in Durotar.

–        Heroic Scenarios

• A Heroic difficulty for Scenarios have been added and are designed to provide challenging content for small groups of well-seasoned adventurers. Completing a Heroic Scenario awards Valor points, and a chance to obtain high level Epic quality items.
  • Battle of the High Seas
  • Blood in the Snow
  • Dark Heart of Pandaria
  • The Secrets of Ragefire
  • Crypt of Forgotten Kings
  • A Brewing Storm

–        Quest Campaign: Escalation

• The Darkspear Trolls are in open rebellion against the Warchief! Aid your faction in preparing to rout Garrosh Hellscream from Orgrimmar

–        Battlefield: Barrens

• Put the stranglehold on Orgrimmar by undermining the Kor’kron supply chain in Northern Barrens.

–        The Legendary Quest Continues

• Journey with Wrathion to the four corners of Pandaria to speak with the August Celestials.

–        Brawler’s Guild Updates

• Test your might against two new tiers of bosses in the Brawl’gar Arena in Orgrimmar or Bizmo’s Brawl Pub in Stormwind.

–        Experience needed to increase from level 85 to level 90 has been reduced by 33%.

A thorough roundup of the new content is available on the World of Warcraft community site, with comprehensive patch notes available here.