The game has been out on Steam Early Access since 2016 and was originally supposed to get its 1.0 release in 2018. The developers delayed the launch while continuing to push out new features.
The team decided continuing their “its done when its done” approach will likely cause the game to stay in early access forever as their focus has been adding new content instead of improving what is already in the game. By setting a release date, the developers have committed to putting a pause on new content and polishing the game for the 1.0 release.
The 1.0 release will not mark the end of development. Wube Software is assuring gamers that once the 1.0 version is out, they will be returning to developing new content for the game.