That is the current latest update for itch.io. VaMX for itch.io is updated every 5-6 months with a tested mega update that includes all developments that have occurred during that time. Updates are always free. There was a recent notice sent by itch.io that there was an update available. This was because a new version of the Installer was posted (due to us changing content delivery network providers). Itch.io automatically sent that email without us requesting it, which confused some users. It wasn't a game update, just a new installer that downloads the same files from a different source.