Things I've noticed so far....
1) when you push the paring button on the back, you no longer get "Paring" on the display...
2) I can now actually pair with my laptop and use the speakers in the iA100, something I couldn't do before.
3) I suspect that shortly there will be a new version of iHome+Sleep, to take advantage of the new firmware...
I also needed to pull the batteries and power to complete the firmware update.