Thanks Az!
It's difficult to define a precise release date as work on that game only on my free time (it's only a hobby after all). Still, my goal is to release every 2/3 months.
Chapter 3 is divided in two parts (and it should be the same for the upcoming ones). So, the next release will be part 2 and it should be approximately of the same length as the first part (so around 1h of gameplay).