A few weeks ago, some very smart and inquisitive WoW fans discovered that Blizzard had recently filed a legal document that, judging by it's wording, is a trademark for an online game called 'Mists of Pandaria' . This eventually hit the major MMO website, MMO Champion, and the WoW community began sifting through lore books and speculating wildly at the thought of a new expansion being on the horizon.
Similar filings in the past have resulted in the trademarks eventually becoming expansion packs for WoW, the most recent examples being Cataclysm (the current expansion) and Wrath of the Lich King (the expansion that was set before Catalysm was revealed), and with the final patch for Cataclysm and the defeat of the corrupted black dragon, Deathwing, hitting the public test realms soon, it's looking highly likely that we will see a trailer for WoW's next expansion at Blizzcon in October.
While details on the game aside from the name being made public at this time, that has not stopped predictions based on what has been included in past expansions to emerge.
There will certainly be a rise in the level cap and new zones, dungeons and raids will be added for players to enjoy, but the question of whether there will be a new playable class or playable race included. A new race for both the Alliance and Horde factions were added at the start of Cataclysm and a new class has not been added since Wrath of the Lich King back in November 2008.
This is where many fans believe that the pandarens will come and train everyone to become Brewmasters (aka surprisingly badass fighters that become more powerful the more alcohol they drink).
The only known brewmaster in the Warcraft universe, aside from the in-game pet and various NPC's, is an elusive Pandaren called 'Chen Stormstout', who Warcraft 3 players may remember helping Thrall and the Horde against the Alliance navy.
Although, information is scarce on the future of WoW, it does make Blizzcon 2011 that much more interesting when it begins on October 21st 2011.