My dealer (Lonestar BMW in Austin) managed to snag the last Fuel Pump Flange in-country and the part is now on my GS--picture below. Apparently I get a two year warranty on this so I'll be covered past my warranty end-date.
Service rep told me they'd been having a few failures and they attribute it to the heat but I'm not buying that. When I asked, they told me the replacement part is exactly like the part coming off i.e. not an improved design and I was also told there was no BMW bulletin on the failures.
I just took the body panels off and I see where the part was scratched and it looks like metal to me so maybe it is an improved part.
I am filing a report with NHTSA; if enough of us file something may be done i.e. a recall. NHTSA reporting webpage LINK