I'm not actually DexCom's account, but maybe I can help. Sorry for the confusion!
According to their website, DexCom is phasing out G6 and phasing in the G7. Production likely shifted to G7 and will taper off G6 in the near future. Here's a related link: www.dexcom.com/faqs/dexcom-...
dexcom.com
Information on Dexcom G6 Discontinuation & Dexcom G7 Upgrading | Dexcom
Learn about Dexcom G6 discontinuation and how to upgrade to the Dexcom G7