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Anyone see this before? Showed up on two flights last night on two flights I have in the next 4 weeks(one is in about a week, the other end of April). The reservation still shows a plane type but you can't view seat maps and the reservation details don't show any seats assigned to me or companions for either flight (even though I had assigments at booking). I checked on flight reservations with a reservation search and even outside of my reservations I get the same notice. So it isn't something specific to my account.

Is this an imminent plane change? Cancellation? Or just a system freak out?