Hey Kaputtnudel!
The game is still ongoing with development! If you have no further quests in your log, then you've done all you can for the current version of the game.
Correct. Our current release schedule is: The Alpha build of a new version is released at the start of each month. About a week later the Beta build is released. Then after another week the Early Access version is released. Then about a month later this version goes free and public. This is the Patreon schedule, it gets released every else later on. A bit more later on Itch with the recent changes to adult content.
If you have a Patreon account (free to make) you can grab the free version there a lot sooner than it would be here on Itch.
You can find out more info on the various Patreon memberships here: https://www.patreon.com/c/zanith/membership