Upgrade lists are now available outside the 2 calendar day mark. I've noticed over the last two weeks that upgrade lists are showing up about 2.5 days now.

I have a flight on Saturday and this morning the upgrade list was still not available. However, this evening it was (2+ days ahead of Saturday). I'll do more research to figure out exactly when it's becoming available but it does appear to be calendar based and not flight based.

-RM