Flew on a MAX with the new seating today (7/15). HNL-LGB #3011. Sat in the "LUV" seats (2 seats in the emergency row) and found the legroom to be super big, the new seats just okay (still inadequate lumbar support for me). The cheap seats did not look any different, space wise, than a classic 800. The window seats in the exit rows, however, appear slightly more narrow than the other seats.
Could not get the tail number since there was inadequate light to read the numbers. I did get the number on the forward landing gear door, 8790.
Perhaps some sleuths here could research the tail number and add it to the list of converted birds.