The season is now just one episode from being completed, and things are really getting serious. In this episode, your choices from previous episodes meaningfully affect gameplay. The hanging plot threads are starting to get tied up, and more cliffhangers are created. If this episode is anything to go by, the final episode should be a doozy.
The only thing known about episode 5 is that it will come out before December 4 (since the North American retail release of all five episodes is scheduled to occur at that time). Unfortunately, iPad users are left quite behind, as they are still on episode 2, and there is no release date set yet for episode 3 or 4 on iOS.