Already confirmed that 2.0 will be the last version, then there will be a Steam version of the game which includes an additional character and quest.
There are no plans to further develop content for the game after the steam release. Any updates after the steam release will be bug fixes and possibly translations (depending on how well the game performers on Steam)
There will then be a 6 months gap before Kal starts working on the next project. There is a possibility this could be a Starmaker Story spinoff, this would be set in the same universe but not include any of the current cast or locations.