At this point, I'm just trying to convince myself that the time-travel aspect is over-blown. That, at worst, it'll be Cataclysm levels of time-travel. I think the WoD is virtually certain to be the title of the next expac.
If it is, it does seem to make for an interesting title progression though; the second xpac title (and the second in a row) to use an in-universe proper noun rather than referencing game-universe specific things with common English.