And in 5.1 it will be phased forever to the destroyed state, and apparently they're adding a new Alliance camp and quests. Might be re doing the Horde quests int he zone too.
The datamined scenario data indicated that we'll be returning to Theramore after its destruction to retrieve the focusing Iris. But it's very possible that it starts in Theramore, we escape with Jaina, an THEN we return to the ruins.