Interesting. It has been discussed for a while that the 748 would have new J. I will be very curious to see what the decide on. I would have guessed they went for something similar to what LX has. LH and LX now have similar F cabins, so it would seem natural for LH to use a similar design in their J cabin.
Either way, I am sure we can all agree that any new J cabin will be a big step up from what they have now.