Well, the updates are on roughly two month cycles. Assuming nothing has changed, you can use basic deduction to guesstimate the probable release date. The last chapter was released on July 23rd my time, so the release of chapter 8 should be around September 23rd. There is the possibility of delay of course, but it should be around next weekend assuming schedules and patterns are kept.
So, there may rightfully be doubt of my two month theory. So I'm going to post the release dates of every chapter. (These are the dates of the Discord notification, but it should be a matter of minutes off.)
1. April 3rd, 2021
2. June 6th, 2021
3. August 7th, 2021
4.1. October 16th, 2021
4.2. December 18th, 2021
5. March 20th, 2022
6. May 14th, 2022
7. July 23rd, 2022
So with the exception of 4.2 to 5, all updates have been roughly two months after the previous one. The weird blimp is caused by some public releases in that time, and since I don't think any are up, the timeline should add up.