I figure you only get the chance to boost 1 character up to lvl 90, but can you take more than 1 character on an account in the new WoD area? Like you can normally
But when you buy the expansion you can boost 1 character to level 90 of your own choice, it can be a lvl 1 you just made or a lvl 80 or whatever.
And about the WoD area, yes you can have more than one character in WoD zones at the same time if that's what you're asking? although im not sure that's what you meant.