I did my usual Sunday morning flight check, and AA changed our January flight. No big deal, I check so I can rebook proactively. What's interesting is that while I'm getting "Your flight is currently being rescheduled." I looked at other sources (EF, matrix) and I can see multiple flights STL-MIA for our overnight connection, but they aren't showing on the AA site yet. I'll keep checking to see when I can rebook, because there's a better connection being shown that doesn't give us a short overnight.