If you like to follow Blizzard-related rumors, this may sound familiar. Way back at Blizzcon '07, this was one way we found out that Wrath of the Lich King was going to be the next expansion: www.worldofwarcraft.com/wrath gave a "Forbidden" error, whereas any other non-existent path at worldofwarcraft.com gave a regular old 404.
and these "inside sources" are anonymous. most likely bullshit, just a little something they throw in there because there are too many recent occasions that point to d3. its to so they have credibility when in fact, im sure they dont hahaha.