My Guesses
Judging by the excitement level of the OP on the other site, the changes must be substantive---something that changes the shape of the program in ways much more so than the addition of one-way awards.
1) Domestic upgrades will be cleared based on elite level and fare class. Although I like the fact that booking early nearly ensures an upgrade, it makes no sense that I sit in FC on a Q/N/S fare when someone who purchased a Y/B fare at 3x the price sits in a middle seat in the back.
2) EVIPs will require copays similar to mileage upgrades.
3) Two additional EVIPs will be earned for each additional 50K EQM/EQP over 100K.
What I hope it is not is a substantial change in qualifying terms...but maybe AA will take the lead in changing to a reward system more closely aligned with $$$ spent on tickets.