Air Canada recently announced that they will be changing the seating on some of their long-range 777-300ER planes.
Why does this matter to you? Currently, the economy cabin on these planes are in a 3-3-3 configuration, but they are squeezing in an extra seat in the middle section, making it a 3-4-3 configuration.
For long flights, this could mean being even more squished up next to your seatmate, who Murphy’s Law guarantees will be on a strict 2 shower a month regiment.