My upgrade DEN-LAX cleared Sunday right at the 96 hour window and because I monitor (fare codes had been showing R9 RN9 so I was expecting the clearance) I was able to do my seat selection immediately. Great.

Interestingly I had not received email notification that my upgrade had cleared until today. UA sent the email at 12:36pm today - just about 21 hours after the upgrade had cleared.

At least I got a notification. In the last few months my notifications have been sporadic at best.

I do miss not having the option of text notification. That is much more conventient for me than email.