Anyone heard a rumour about hidden updates on Black Ops?

My Xbox360 was running the pre-nxe for the longest time, and was disconnected from live because I didn't want any more updates.

I rented brink a while ago and it updated as it always does for new games, but when the update finished and the xbox rebooted, i was welcomed with the NXE environment.

So I don't know about CODBO software updates, as far as I know there's definitely one on brink.