原来是内测奖励，后来取消了。

"At one point the Hearthsteed was meant to be a mount you could use in WoW as a reward for joining the beta, but that's since changed. Are there any plans to have cross-game promotions still?

The Hearthsteed is something that is still coming up. We haven't announced how that's all going to work yet but there's a connection coming up with regards to that. "

http://www.wowhead.com/news=2212 ... ds-and-jason-chayes