After all our troubles with insurance (3 months to get a new Dex), I read that since we just got a new one in August I can upgrade to the G5 for free. Called Dexcom and signed up for the upgrade. They said it will ship 10/1. They ship the new transmitter and we can upgrade the receiver software online. So I guess I'm kind of glad that it took so long to get our new one. If we'd gotten it in June when we first filled our paperwork or July there'd be a charge to upgrade.