Completed the 8th stage, this is the last stage of the game. Even I start to freeze like a computer when I start to think through the factory of the 7th stage :D therefore, the 8th stage is the final stage of the game for now.
Patch Notes v.121.29
Source: Steam Community (opens in a new tab)
Build and release context
Recorded Steam release date:
Within one calendar day of this post (UTC). The listed date does not establish an exact launch time.