Event plots?

Are there going to be things like plots that update very month or something? A special thing happening in the world of GW that allows you to do like certain missions er quests er whatever, I dont really know the difference, couold someone tell me? But anyways, yah, plots that happen once a month er something that have to do with the story? I dont know? Something like that? And you will onyl be able to do it once becasue it wil involve osme secret boss?

Apparently there will be weekend events for PvP, GvG... I don't know if they will add new or side quests unless it's in the add-ons... I'll double check the GW site and other interviews, but to my knowledge that will be it... Mind you, new chapters will be added relatively fast, with more everything, not just plots