I just got this message for a SFO-EWR red-eye next month. We had seats 7E/F. Went back in an hour later and I'm still in 7F and the wife is back in row 10!
No equipment change - still a 737-900. So, I had to pick the first available row with 2 seats together and as a result we're now back in row 12.
Question: Who got 7E and why???