This release marks the point where Conduit is fully usable as a non-federating homeserver. All features of the client server specification should be implemented, unless they can be seen as optional extensions (e.g. alternative registrations methods like email). Conduit should also be free of all known bugs with those features.
Adding federation on top of the 1.0 release will very likely require breaking changes. This means that the release which brings federation will be 2.0 or later and will require a partial or full database deletion.