Thanks for the heads up on the M80 2x2 seating being the old seats. I suppose it was a lot more cost effective to use surplus 2x2 seats rather than buy new 717-style 2x2 seats for this interim period. When they start changing the 717's to mixed seating there will be a surplus of those newer 717 premium seats. Perhaps then they'll put them in the M80's. If nothing else the eventual M80 replacements are almost certain not to use the old seats.