Pre-release packages are officially supported and actively being developed. They need feedback from early adopters to stabilize and become Released in the next LTS. Enable Pre‑release Packages in your Project Settings to discover them.
These cutting-edge, exploratory packages are not ready or tested for production. Experimental packages are unsupported, may not be part of the roadmap, and can be deprecated without release, but feedback from early adopters is still welcome. They can be added by name in the Package Manager.
The new package lifecycle
The new system was introduced to provide guidance on a package’s readiness, progress, expected support level, and Unity’s long-term commitment. While only Released packages are visible on the Package Manager, you can visit the forum to learn how to test and give feedback on packages before their release.