It has always been dificult to upgrade on routes like between EWR-IAH or CLE-IAH, there's no reason to expect that anything has changed. I was looking on easysabre today at availability for flights from EWR to IAH on Monday, of 12 nonstops only 2 had availability in "F"
class (available for upgrade), although most had availability in "A" class.

Last September I was numero uno on the standby list for CLE-IAH, they said that it looked good when I left the Presidents Club, but the gate agent said that FC was full. I later learned that I was upgraded, but they forgot to let me know, so I didn't find out until weeks later when my OnePass statment came in the mail.....BUMMER!