And now they might be doing it again. I just love the idea of them holding this tension over our heads (or beneath our feet rather). Makes you wonder what's coming next?
ETA: It could be just to do with the Vale (only one person's noticed it outside Pandaria on this thread right?), but that sort of seems a bit lack-luster given that everything in the Vale has already happened. I hope it's a build up thing and simply hasn't been noticed much outside of Pandaria because that's where everyone is.