World of Warcraft: Cataclysm

Arthas will not be pleased when he catches wind of this news.
Expect longer than usuall maintenance times and crappy drops for weeks!

The so called masonic symbol on the dalaran shield may just really be a pop culture reference, there are Easter eggs in the game that refer to stuff that popular in society like the hatch in northrend (lost), the creepy kids running around forming a pentagram (the exorcist, I think).