I went with widowed for my relationship status on Facebook. I plan to keep that until the one year anniversary, and then change it to whatever the state of my current relationship is at the time. Yes, I'm currently in a relationship, but right now I still feel that "widowed" most accurately reflects my feelings.

As for the ring, I had mostly gotten out of the habit of wearing it during the final few months; maybe I was getting myself ready in advance. I still wear the oak leaves and acorns ring sometimes (that's one that Marian had made for me years before we married); that one feels like "honoring our history" rather than proclaiming that I am (or was) married.