In March of 2012 Southwest began reconfiguring their 737-700 fleet to increase their seating capacity from 137 seats to 143 seats. These newly reconfigured aircraft will also feature the new Evolve Interior with silmline seats. Their Evolve Interior is an eco-friendly design that is part of Southwest's commitment to be a "green" airline. Southwest has retained the "Innovator II" seat frames and added fixed wing head rests, along with a newer and thinner foam fill. This seat has a reduced recline from 3" to 2", in comparison to the older versions of this aircraft; however this loss is compensated for as you are sitting at a different angle and this seat design should naturally recline your body to prevent the feeling of "needing to recline".
Some passengers of the new 73G Evolve product have found this new configuration to be much less comfortable however due to the change in seat pitch from 32", down to 31". The issue doesn't appear to lie with the seats themsleves, but with the overall feeling of cramped seating.
There is no pre-assigned seating for Southwest flights. Your time of check-in will determine whether you are in Zone A, B, or C for boarding. The earlier you board, the better chance you'll have at the seat you want. There is no audio or video entertainment on Southwest flights.
