I'm making the DTW - PVG trip almost monthly, and just saw the 747 seat map as I went to check out some flights in October.

Is this a temporary change, or permanent? I know the flight is nearly always full, so I can understand adding some capacity makes sense.

Bearing in mind I'm usually flying in Econo Comfort, unless I score with an upgrade voucher, ..... I assume these 747's are all upgraded? I haven't flown one for years - not since I used to do DTW - NRT. How's the rollout for wifi?