As the countdown to BlizzCon 2007 continues, the first wave of speculation as to what Blizzard Entertainment may announce at the event, which takes place at the end of the week in Anaheim, California, has emerged online.

Originating from fansite WoW Insider, the rumours surround the possibility that a second expansion pack to the MMO could be unveiled, specifically focusing on the polar region of Northrend, last seen in Warcraft III: The Frozen Throne.

Speculation that Northrend's frozen wastelands will be the next continent to make an appearance on World of Warcraft emerged after WoW Insider received sheet music allegedly from within Video Games Live, which is set to play at the event. Entitled 'Northrend 1', 'Northrend 2', and 'Northrend 3', it would certainly seem that an announcement could very well be on the cards - especially when the first expansion, The Burning Crusade, was also unveiled back at the 2005 event.

Either way, it won't be long before we find out if our Mages, Warriors, and Draenei will have to pack for arctic conditions...