We need to gather more content to release new update. As we currently working on Chapter 3 which will take place in Hell (mostly), we wish to at least push some story in that direction first.
If you're interested on Patreon you can get newest version of the release (0.73.3), which contains a lot of improvements already, by pledging 5$.
Unfortunately at this point it's hard to make estimations when new public version will be released.