An article on Eurogamer Blizzard has confirmed that a new expansion is in the pipeline.

Sams said Blizzard was "most certainly" planning to develop paid expansion content, stating: "I think that all of us would be naïve to think that we wouldn't do that... When we announce it and what it will be is something that we'll figure out in the near-term future."

Great, not only can you completely vanish without trace playing WOW, you will soon be able to do it all again when the expansion get's released.