Correct. It doesn't make sense to put out a large structured delivery of quest content when the core mechanics of the game are in flux. If we did, a lot of the experience would potentially be ruined by one glitch or another. We're aiming for some stability in the core game first. There is some new content in the form of some new areas to explore, side quests, and collectible items, but not what you would call episode 4.
Also, to be clear, we aren't doing 'episodes' anymore. In past the game would sit stagnant for many months, then a chunk of story would come out - everyone would burn through it in a couple of weeks, and it nothing would happen again for many months till the next chunk would drop. Instead, our goal is to offer a constant stream of new content in smaller portions, much more frequently.