Í´m fairly confident the 777s will get the new J pod and not the mediocre 77P J seat.

But apart from that there are three interesting questions:

1) How many J/PE/Y seats?
2) I think it´s safe to assume seat pitch will be reduced in Y, but will AC also cramp in one more seat per row?
3) If the answer to #2 is yes, will they at least have a few rows of "preferred seats" with extra seat pitch, and possibly the current 3-3-3 config?