Got the letter yesterday. The clear ring looks like it protrudes enough to be quite exposed to impact damage.
My wife decided she also wants a 670, so we looked at her 530. Sure enough, it had some cracks around the reservoir window that “tick the right box” when calling for a “new” pump. She will get the loaner tomorrow and the Medicare-provided (thru CCS Med) pump should show up in less than a month. Like me, she has a hard time reading the awful 530 screen.