Most recent upgrades seem to have been around 1800 GMT (UK time) so that's between 5-7 hours ahead of US time? (i.e. then around 1100-1300 us time, depending on where you are?)
You know what? I know all those details, and the fact that probably were I live the update will come around 2pm...but I will go to sleep late today...just in case..LOL