Stability AI just screwed up and published their latest project with an MIT license instead of the proprietary license they wanted. They just tried to pull a switcharoo a day later.
If anyone is interested in teaching a lesson to a company that doesn't respect intellectual property, consider forking their repo before this commit to set the precedent that this is FOSS whether they like it or not: https://github.com/Stability-AI/StableCascade/commit/209a52600f35dfe2a205daef54c0ff4068e86bc7