They will be back. Here is a response from Southwest to another user on Twitter: Tech Ops has a plan for repainting Tennessee One and Illinois One, these aircraft will remain in our fleet far into the future. More to come, but for now know that all of Southwest specialty livery, including our state planes, will be back! My guess is sometimes you just need a refresh like when you repaint your house but in this case they will repaint it on a different plane. -Blake
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