Today at T-24, UA988 finally opened up "I" inventory. It had been I0/IN0 since we booked back in early March (my R-space upgrade cleared in May, FWIW).

Of course, all that's left are middles in the 4-across section, so our strategy is going to be to keep my wife's "O" ticket and have her offer to trade the window seat next to me for her seat in 1A. Can't imagine someone in a window seat in C will turn down a window (with aisle access) in F.