New signature required for each new version of a module?

If one goes through the process of getting their module cryptographically signed by IA, do future versions of the same module require a new signature or will the same signature work for new versions of the SDK developed module?

They’ll need to be signed each time they’re released, but it should be a fully automatic process (most of the time- perhaps initial module release will need some sort of review- we’re going to be figuring out this kind of stuff shortly).