Called this morning and confirmed that the ability to upgrade DL flights with the NW certs is "coming soon". Very frustrating, as the timing of the connection thru ATL made the trip work. I was also disappointed to learn that ATL-NRT is serviced by the 777-200ER, with the old BE seats, but that alone probably wouldn't have been a deal-breaker. Anyway, I just canceled the trip, which was a M fare MR for daughter and I to SIN. ~$4,000 revenue lost.