Go to the China Airlines website: http://www.china-airlines.com
Look for the part about their inflight service, and there is a flash presentation about their new Boeing 747-400 with the Dreamliner livery.
The presentation talks about the Boeing signature interior on the 747-400, and at the end of the presentation there are some seatmaps of the plane. An on the main deck, there is a legend that states the pitch in the new Herringbone first class is 47".
However, since right now as I write this post the China airlines website is not working, so I can't post the link to the specific part...
In addition, this 47" figure is just for reference..... the actual one depends on the actual configuration. For example, the actual pitch on the VS
upper class suites is less on the A340 (and the 747-upper deck) than on the Main deck 747-400. This is because the seats on the A340 is tilted at an angle larger than on the 747-400 main deck (since 3 abrest on the A340 gives a larger available width than 4 abrest 747)..
I did some very crude calculations using AutoCAD, and it seems that the actual Upperclass suite pitch on the A340 is around 36", and the one on the 747-400 main deck is around 42". So do anyone here know what are the actual figures ?
On Air France 777-300ER first class, the actual pitch is very large- according to the Air France website, its 79", and I do believe that its true, because the airfrance first class doesn't make much use of the "overlapping" space that is possible with herring bone configurations... so its rather space inefficient.
first class, the pitch is varying. This is because in the middle seats, there is not much "overlapping", and the pitch is basically the same as the bed length, i.e. close to 78". For the window seats, the pitch is smaller but still not constant due to the special shape of the 747 nose. I would guess around 50".
Hope that helps !