Hmm, this article actually seems to suggest that your character can be transferred anywhere, at anytime, and for free? How many times can we do this? Just at the new account creation on their Battle.net system?
It's just not that clear if this is a paid character transfer service, or some feature of the Battle.net system. And in fact, there was no region restriction before for character transfers, you just had to pay an extra 30 kuai.