Zarhym Does Blue cheats when they play WoW?

According to this thread http://forums.worldofwarcraft.com/thread.html?topicId=10535464797&sid=1 Blue already have lvl 80 'elite tauren chieftain'

I was pretty sure it was mentioned that we can only lvl up beyond lvl 70 when wotlk is here.

How did they lvl up to 80 before WotLK is released?

Edit: Updating the link to the thread, as I had to delete it and repost.