1.7.2 was released today, however the server is not ready to update. Bukkit has yet to update preventing us from updating the server features. Also, when Bukkit updates it will still be some time until IDP is readied for 1.7.2. We are giving you an option. Would you rather keep the server at 1.6.4 and have access to your lots and other server features, or would you prefer us updating and running a temporary freebuild server so you can enjoy the new minecraft update in multiplayer until we can fully update the serer?