I'm still trying to be optimistic and say it'll be September but I'm now thinking it probably depends on how much of that list he insists on completing before the next release. Numbers 1-4 will obviously have to be finished to 100% now but the other four, depending on how they're implemented, could technically be left for a future update. If he insists on new events (and, for the Patreons, will probably have to) then I suspect it won't be next month and you may be right on 2/3 more months!
yup maybe he decides he needs to get an update out next month and goes without some things on list.
although most of the work is in the first two I would presume.
if while doing the "improving quality of renders", he actually did new images for the new content he adding, then maybe once he finishes rewriting the entire game, the last 6 might not take very long, really depends on what preparation work he did while doing the first two.
hard to say for sure, but it be worth the wait.