I don't think this is related to any merger possibilities. Tribune generally allows their stations to make their own decisions about such elements (logo, graphics, sets). KCPQ/Fox in the Seattle market changed up their set and graphics in the past couple of years, and I believe it came from the local level. Too soon to tell what the future will hold, but for now, Trib, as I understand it, is still on their own when it comes to such decisions.