In our case, probably not nightly, but whenever we have something we’d like to share in a usable however not fully-baked form. Preview builds are similar to what other development communities may call nightly or experimental builds. We will provide one centralized repository, but with two different states of development you can choose to work with: While you can choose to use these existing packages as-is, we have no plans to fix any issues or enhance them further and we h ighly recommend you begin shifting over to the newer centralized repository that will receive all future enhancements and fixes.