Checking an itin on united.com and have this message (in red)

United Airlines 0805
KL

To confirm, please call 1-800-589-5582 for schedule information.

I called the number, and the rep confirmed the scheduled time with me. That's good, but the time hasn't changed - it's exactly the same as when I first booked. I then asked her if my upgrade had cleared the w/l. She checked and said "yes", but couldn't indicate which seat in C I was assigned. United.com still shows me confirmed in Y.

Normally when I get this message it's because of a schedule change, but in this case the schedule didn't change. Could I have cleared the w/l and the seat assignment will show at a later point?