You have the option to select all the previous episodes(Episode 1, 2, 3, 4)
Episode 4 will have four different endings
Another secret is revealed in this episode
Added new locations
Episode 4 has multiple jump scares

This episode is very plot-driven and story-oriented so you will need to pay attention to everything that is said and mentioned

It is recommended that you achieve all four endings to get a better understanding of the story

The game should be available in the next few days.