Be sure to read the post carefully. The content pack is finished, but not on Itch yet. That will happen on the 12th of November. Right now it's only live on early preview on SubscribeStar. If you've already bought the game here, you'll be able to come to the store page and download the new version, with the pack, for free on the 12th. If you accidentally bought a second copy here, feel free to ask for a refund.