Chapter 4 is the mid-story checkpoint and it's a pretty big one. In general, we really try to stick to the 90 day update cycle, so following Aug 28 for Ch3, I'd guesstimate the end of November. Glad you enjoyed it!
I wish it was faster, but Kentyrr and I both have full time jobs, and most images take an hour or more to render on a dual RTX 3090 system. Considering the average chapter has 1300-1500 individual renders in it, it takes our development rig about 62 days of nonstop image cooking not counting any other development work. If we do a game after this one, we may opt for lower image quality so updates can be faster.