So did we get to the bottom of how the physics inside the B738 fleet is going to work? When the refurb happens, will the B738 fleet be losing a row of Y seating, OR gaining another row of J and losing 1 or 2 rows of Y? with the forgone Y seats allowing the extra seat pitch? I'm assuming not an addition of another row of J class seats as the airline would have made a much bigger song and dance about that.
They could have just published a detailed seatmap and removed all doubt.
I understand that the A220 and A321 fleet are already set up for this, so no changes there, really just about the seat count and configuration in the B738 fleet going forwards.
Agree with others that removing a row of Y might just make the difference in delays flowing from the running out of overhead bin volume issue that the Qantas B738 fleet currently has (along with a lot of B738 operators). Just takes a 5-10 minute baggage/gate delay at SYD or MEL over the fleet over an average day to blow up any marginal revenue that could have been earned from the 6 Y seats that may or may not be filled. A lot of the golden triangle flights I have been on in QF B738s have been 95-100% load factors lately so the airline isn't having any problems filling seats lately.