Community is something we are going to be very concerned with. I think we've already mentioned that we plan to have a service called Reverie Online, which will hold tournaments, contests and also have a very extensive modding library with tutorials and articles written by Reverie staff members. Below is a concept for the site.
We already have an expansion planned, and it should release about six to eight months after the release of the game. Though this may change due to publisher arrangements.