This just happened to me as well, except I never received any email about it. Family (all non-status) is planning a trip during the holidays. We're all on the same reservation, and after the flights were booked and I checked the trip in My Trips, it lists us all and our seat assignments, but no "Upgrade Requested." I currently have 5 other trips in My Trips in which I am the only passenger, and they all say Upgrade Requested. Time to make a call to the medallion line...