No update for me.
Funny thing... model number and build number are both a500, while my model ID (not to be confused with model number) is a501... go figure.
mines a model a500 and got the upddate today
model number a500(model id also a500)
android 3.01
kernel 2.6.36.3
build number acer_a500_1.139.05_com_gen1
FYI, the US has a number of FCC barriers that must be lept over before these software updates reach us. While the rest of the world is getting a firmware update, the US can get it anywhere from a few days to months later, depending on what the update does.
I had to suffer through this with my phone getting Android 2.1 some time ago. The whole world got the update except the US. After 2 months of waiting, I finally gave up and flashed my phone.