Just in case anyone has missed it, an update is available for the 7D firmware. My own 7D came in with Version 1.0.7; the update is Version 1.0.9. More information and the firmware download is available here.
The firmware upgrade procedure is well described by Canon and is relatively straightforward – in other words, I did it and my 7D firmware is now Version 1.0.9. No apparent differences between the versions in so far as I can tell in my own limited and normal use.