Interesting. Scottrade still says it's "pink sheets." When it moves to OTC:BB, I think we all will know it, as some trading confusion will ensue. My experience is that exchange changes are not perfectly smooth processes.
I see no changes in the listing of NNVC yet, looking on my two brokerage accounts and the Yahoo Finance NNVC site. I don't think it's moved yet. Besides, they would surely immediately PR the change...