The paperwork says "potentially affected" but I assumed that was to cover themselves in terms of some may have already burnt up, some may not. I didn't realize it was a possible part change. The paperwork does says "produced between Nov 1, 2007 and Sep 5, 2011" though. BTW, if you want to check your car you can enter your VIN into the BMW site and see what comes up.
https://www.bmwusa.com/safety-and-emission-recalls.html