I cannot revert the game to unreleased without direct Steam intervention. I initially tried to release a free playable demo and accidentally added a new DLC instead. I'm very sorry. Please do not purchase the DLC, as it will take years to release. There is no new content unlocked with the DLC for sale.
If you have more questions, come chat with me on Discord:
https://discord.com/invite/g2ksjJx
Joseph Abraham