Well colour me impressed - right at 48 hours out (ok well technically 3 minutes less), I received an email from AA confirming my upgrade using a few 500 certs for MIA-BOS. I'd pretty much given up trying to use 500 mile upgrades especially once the PlatPro level was intro'd and likewise the whole rolling spend - especially considering most times I fly domestic, the upgrade list at the gate seems to be a minimum of 12 or more. Maybe this is a little holiday gift from AA to try to woo me back considering I won't even qualify for Gold at the end of the year and my spend with them has been minuscule this year.