We flew it today, by surprise, SFO-IAH. The new metal wreaked havoc with seating. We were together in Economy Plus Row 23 and they automatically split the reservation into two separate ones and separated us rows 22 and 34. Nobody at the airport could help beyond saying "they changed the plane". We finally gave up and sat in 58 because we had a whole row empty. By the way, 59L is a great seat because of an empty space next to it. Row 59 is 2-3-2.