IGN interviewed General Manager of Warcraft, John Hight, discussing the future of Plunderstorm and other possible seasonal events!
IGN Interview
In the interview, John Hight talked about future plans for many events like Plunderstorm; that is, events that are seasonal and the team can use whenever they need them. They aren't opposed to firing up a Plunderstorm or another event whenever the players want something new.
If they like it, that'll inform what we do next: whether it evolves an existing system, whether it becomes part of one or both games or whether it continues as an event. We like the notion that there are events that are seasonal in a way that come in just like we do the seasons in WoW itself…What we're trying to build is a repertoire of fun things for the live team…to be able to pull the arrows from the quiver and use them when we need to use them. If we get a point where we can see the players want a new event or engagement, we can fire up a Plunderstorm or we can fire up some other event. And we are planning a lot of different kinds of events like that.
This seems to indicate that Plunderstorm can absolutely return in the future and the Pandamonium Timerunning of Patch 10.2.7 could also be a seasonal event. What would you like to see from a future Seasonal Event!
Read more on wowhead.com