Thank you! Yes, both the Steam and Itch versions include Chapter 5, as well as all future content. Right now, the plan is for 12 chapters, with at least 20 hours of content for a play through, and 4 possible endings. Each ending will be significant in length in it's own right as well. I will not be doing little 5 minute "and they lived happily ever after" type wrap ups. They will be proper endings.