Originally Posted by
gregleck
If that is the case, why claim that upgrade notifications may be as early as 100 hours before departure
There is nothing wrong or deceitful with claiming the EXP upgrade window opens at 100 hours. AA has never claimed or advertised that you are guaranteed an upgrade at 100 hours out, only that that is when the complimentary upgrade window opens for EXP's.
If the cabin is wide open then yes, your upgrade might clear at T-100, but if there's only 1 seat left for sale in business then no, AA obviously isn't going to give that one away for a free upgrade 4 days out.
I've been upgraded at T-100 many times. Yes, it doesn't happen often nowadays, but it can still happen.