Actually, the hope is to allow you to flight plan from any support device, platform and push that to your "cloud" account, then you could pull it down from your account using any wi-fi device running iFly GPS. Even LTE or 3G, since it's coming from the "cloud" account.
We'd still have the local network sharing option when cloud access is not available. We want to store user setting, past flights, future logbook feature and more for you on that cloud account.